Actuating device, camera module, and electronic device

ABSTRACT

The technology of this application relates to an actuating device, a camera module, and an electronic device. In the actuating device, an actuator is configured to include an actuating magnetic component, a power supply apparatus, and at least one coil. The power supply apparatus is electrically connected to the coil, and the coil is disposed in a magnetic field of the actuating magnetic component. When a current is supplied to the coil, the coil or the actuating magnetic component moves under an action of the magnetic field. In this case, the coil or the actuating magnetic component can drive a motor carrier to move, to drive a lens of the camera module to move, so that zooming of the camera module is completed.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Application No.PCT/CN2021/080640, filed on Mar. 12, 2021, which claims priority toChinese Patent Application No. 202010172570.4, filed on Mar. 12, 2020.The disclosures of the aforementioned applications are herebyincorporated by reference in their entireties.

TECHNICAL FIELD

Embodiments of this application relate to the field of mobile terminaltechnologies, and in particular, to an actuating device, a cameramodule, and an electronic device.

BACKGROUND

In recent years, photo shooting and video shooting functions havegradually become basic configuration of handheld communication devicessuch as mobile phones, personal digital assistants, and laptopcomputers. With higher shooting requirements of users on mobileterminals such as mobile phones, combination of functions of long rangeshooting with a long focal length and wide-angle shooting with a shortfocal length has become a standard configuration of mobile terminalsthat are currently popular with the users. However, mobile terminalsthat meet shooting requirements of different focal lengths need cameramodules with an optical zooming function.

To implement the optical zooming function of the camera modules,actuating motors need to cover an increasingly large movement stroke. Ina related technology, a camera module in a mobile terminal includes aplurality of lenses disposed in parallel and spaced from each other andan actuating device configured to drive the lenses to move. Theactuating device includes a stepper motor and a screw thread that isinstalled on a ball screw on the plurality of lenses. The stepper motoris connected to the ball screw through the ball screw that acts as anattachment plate. During operation, the stepper motor drives the ballscrew to rotate, to drive the plurality of lenses to move in anextension direction of the ball screw, so as to implement the opticalzooming of the module.

However, costs of the stepper motor configured to drive the lens to moveare high, and requirements on machining accuracy of the ball screw ishigh, therefore there is a challenge for manufacturing the entire cameramodule.

SUMMARY

Embodiments of this application provide an actuating device, a cameramodule, and an electronic device, to reduce manufacturing costs andmanufacturing difficulty of the camera module and the electronic device.

An embodiment of this application provides an actuating device,configured to drive a lens of a camera module to move in a specifieddirection. The actuating device includes at least one motor carrier andat least one actuator.

Each motor carrier is configured to carry one lens, and is driven by oneor more actuators in at least one corresponding actuator.

Each actuator includes at least one actuating magnetic component, apower supply apparatus, and at least one coil. The power supplyapparatus is electrically connected to each coil. Each motor carrier isconnected to the at least one coil or the at least one actuatingmagnetic component. The at least one coil and the at least one actuatingmagnetic component are configured to jointly drive one of the at leastone motor carrier to move when the at least one coil is energized.

In the actuating device provided in embodiments of this application, anactuator is configured to include an actuating magnetic component, acoil, and a power supply apparatus. The power supply apparatus iselectrically connected to the coil, and the coil is disposed in amagnetic field of the actuating magnetic component. When a current issupplied to the coil, the coil or the actuating magnetic component movesunder an action of the magnetic field. In this case, the coil or theactuating magnetic component can drive a motor carrier to move, to drivea lens of the camera module to move, so that zooming of the cameramodule is completed. In the actuating device in this application, amovement stroke of the motor carrier is related to the length of theactuating magnetic component. Therefore, the motor carrier can implementlong-stroke movement by extending the length of the actuating magneticcomponent, to increase a focal length adjustment range of the cameramodule and improve user experience. In addition, with a simplestructure, the actuating device effectively reduces manufacturing andinstallation difficulties. In addition, each component is at lower coststhan a stepper motor, reducing manufacturing costs of the entire cameramodule.

In a possible implementation, each actuator further includes a magneticshielding component, and the magnetic shielding component includes afirst magnetic shielding portion and two second magnetic shieldingportions.

The two second magnetic shielding portions are oppositely disposed attwo ends of the first magnetic shielding portion. The first magneticshielding portion and the two second magnetic shielding portion encloseinstallation space. The actuating magnetic component is located in theinstallation space, and is fastened to the first magnetic shieldingportion. Each motor carrier is connected to the at least one coil or thefirst magnetic shielding portion.

The actuating magnetic component is disposed in installation space ofthe magnetic shielding component, to improve structural stability of theactuating magnetic component in the actuating device and shield amagnetic field generated by the actuating magnetic component, so thatthe magnetic field does not interfere with normal operation of othercomponents of the actuating device.

In a possible implementation, the magnetic shielding component furtherincludes a third magnetic shielding portion.

The third magnetic shielding portion and the first magnetic shieldingportion are spaced from each other and disposed in parallel, and twoends of the third magnetic shielding portion are connected to the twosecond magnetic shielding portions.

Two ends of the actuating magnetic component separately extend to thetwo second magnetic shielding portions, and the coil is movably sleevedon the third magnetic shielding portion. The energized coil moves, underan action of the magnetic field, relative to the first magneticshielding portion in an extension direction of the third magneticshielding portion.

In embodiments of this application, the third magnetic shielding portionis disposed, the coil is sleeved on the third magnetic shieldingportion, and the two ends of the actuating magnetic component separatelyextend to the two second magnetic shielding portions. In this case, amagnetic induction line perpendicular to the coil may be formed due to amagnetic effect, and only a part of the coil between the first magneticshielding portion and the third magnetic shielding portion can inducethe magnetic field. In addition, the coil is electrically connected tothe power supply apparatus, to form a loop current on the energizedcoil. The current produces an Ampere force in a magnetic fieldperpendicular to the coil. In this case, when the motor carrierconnected to the lens of the camera module is connected to the coil, andthe magnetic shielding component is fastened to a fixed component in aterminal, the energized coil drives the motor carrier to move in anextension direction of the third magnetic shielding portion under anaction of the Ampere force. Alternatively, when the motor carrier isconnected to the first magnetic shielding portion, and the coil isfastened to a fixed component in a terminal, after the coil isenergized, the first magnetic shielding portion drives the motor carrierto move in an extension direction of the third magnetic shieldingportion due to action and reaction forces. This implements movement ofthe lens and zooming of the camera module.

In a possible implementation, the actuating device further includes abase.

The at least one motor carrier, the at least one actuator, and the atleast one lens are all disposed on the base.

In a possible implementation, each motor carrier is connected to the atleast one coil of one or more corresponding actuators, and the at leastone actuating magnetic component is fixedly connected to the base.

In a possible implementation, each motor carrier is connected to the atleast one coil of one or more corresponding actuators, and the magneticshielding component and the at least one actuating magnetic componentare fixedly connected to the base.

In a possible implementation, the base includes at least one side wall,and the magnetic shielding component is at least partially fastened tothe side wall of the base.

In a possible implementation, there are a plurality of motor carriers,and the plurality of motor carriers are spaced from each other in anextension direction of the third magnetic shielding portion. There are aplurality of lenses, and the plurality of lenses are spaced from eachother in an axis direction of the lenses.

In a possible implementation, there are a plurality of coils, and theplurality of coils are sleeved on the third magnetic shielding portionand spaced from each other.

A holder is disposed on each motor carrier, the holder is provided witha limiting hole, the holder is disposed on the third magnetic shieldingportion, and the coil connected to the motor carrier is clamped into thelimiting hole of the holder.

In a possible implementation, there are a plurality of actuatingmagnetic components, and the plurality of actuating magnetic componentsare successively disposed in an extension direction of the firstmagnetic shielding portion. At least one coil is disposed on a side ofeach actuating magnetic component, and the motor carrier is connected tothe coil, so that the coil drives the motor carrier to move after thecoil is energized.

In a possible implementation, the coil is fastened to the base, and theactuating magnetic component is disposed on the first magnetic shieldingportion. The actuating magnetic component and the motor carrier arerespectively located on two sides of the first magnetic shieldingportion. Each motor carrier is connected to the first magnetic shieldingportion. The actuating magnetic component is configured to move afterthe coil is energized, to drive the first magnetic shielding portion andthe motor carrier to move.

In a possible implementation, each motor carrier is connected to acorresponding coil.

A holder is disposed on each motor carrier, the holder is provided witha limiting hole, the holder is disposed on the third magnetic shieldingportion, and the coil is clamped into the limiting hole of the holder.In this case, when moving along the third magnetic shielding portion,the energized coil can push a side wall of the limiting hole to drivethe motor carrier to reciprocate, to move the lens. In addition, thissimplifies a connection structure between the motor carrier and thecoil, to improve efficiency of installation between the motor carrierand the actuator.

In a possible implementation, there are a plurality of motor carriers,and the plurality of motor carriers are spaced from each other in anextension direction of the third magnetic shielding portion. There are aplurality of lenses, and the plurality of lenses are spaced from eachother in an axis direction of the lenses. Each motor carrier isconnected to a corresponding lens.

There are a plurality of coils, and the plurality of coils are sleevedon the third magnetic shielding portion and spaced from each other. Eachmotor carrier is connected to the magnetic shielding component, or isconnected to a corresponding coil.

In embodiments of this application, the plurality of coils are sleevedon the third magnetic shielding portion of the actuator, tosimultaneously drive the plurality of motor carriers. A quantity ofactuators and a quantity of components and parts of the entire actuatingdevice are reduced while driving of the plurality of motor carriers thatare spaced from each other is implemented. Therefore, the entirestructure is simpler and more compact, and manufacturing andinstallation efficiency of the actuating device is improved.

In a possible implementation, the actuating magnetic component includesa first part and a second part that are disposed in an extensiondirection. The first part and the second part have opposite magnetism.The coil is located on a side that is of the actuating magneticcomponent and that is away from the first magnetic shielding portion.

An axis direction of the coil is perpendicular to an extension directionof the actuating magnetic component. A part of the coil is located on aside of the first part, and the other part of the coil is located on aside of the second part. The energized coil moves, under an action ofthe magnetic field, relative to the first magnetic shielding portion inan extension direction of the actuating magnetic component. Theextension direction of the actuating magnetic component is consistentwith a specified direction.

In embodiments of this application, the two parts of the actuatingmagnetic component that are disposed in the extension direction haveopposite magnetism. Two parts of the coil that are disposed in theextension direction of the actuating magnetic component are respectivelydisposed on a side of the first part and the second part. In this case,when power is supplied to the coil, the coil moves in the extensiondirection of the actuating magnetic component under an action of themagnetic field. This can ensure that the coil or the first magneticshielding portion to drive the motor carrier to move in a specifieddirection, to drive the lens. In embodiments of this application, themotor carrier can change the movement stroke of the motor carrier byadjusting extended lengths of the first part and the second part of theactuating magnetic component. This ensures a simple structure andconvenient installation and operation.

In a possible implementation, the actuating magnetic component furtherincludes a fourth magnetic shielding portion.

Two ends of the fourth magnetic shielding portion in an extensiondirection are respectively connected to the two second magneticshielding portions. The first magnetic shielding portion is connected toa side of the fourth magnetic shielding portion. The first magneticshielding portion, the two second magnetic shielding portions, and thefourth magnetic shielding portion jointly enclose the installationspace. Both the coil and the actuating magnetic component are disposedon the fourth magnetic shielding portion.

Disposition of the fourth magnetic shielding portion further isolatesthe magnetic field, and improves structural stability of the actuatingmagnetic component and the coil in the actuating device.

In a possible implementation, there are a plurality of motor carriers,and the plurality of motor carriers are spaced from each other in anextension direction of the first magnetic shielding portion. There are aplurality of lenses, and the plurality of lenses are spaced from eachother in the extension direction of the first magnetic shieldingportion. Each motor carrier is connected to a corresponding lens.

There are a plurality of actuating magnetic components, the plurality ofactuating magnetic components are successively disposed in the extensiondirection of the first magnetic shielding portion. One coil is disposedon a side of each actuating magnetic component. Each motor carrier isconnected to the magnetic shielding component, alternatively, isconnected to a corresponding coil.

In embodiments of this application, a plurality of coils are disposed inthe actuating magnetic component of the actuator, to simultaneouslydrive the plurality of motor carriers. A quantity of actuators and aquantity of components and parts of the entire actuating device arereduced while driving of the plurality of motor carriers that are spacedfrom each other is implemented. Therefore, the entire structure issimpler and more compact, and manufacturing and installation efficiencyof the actuating device is improved.

In a possible implementation, the actuating device further includes abase. The motor carrier, the actuator, and the lens are all disposed onthe base, to improve installation stability of the actuating device andthe lens. This can also ensure a more compact structure of the cameramodule formed by the entire actuating device and the lens.

In a possible implementation, the motor carrier is connected to thecoil, and the magnetic shielding component is connected to the base.

The magnetic shielding component is connected to the base, so that themagnetic shielding component remains stable. The motor carrier isconnected to the coil, so that the energized coil stably moves in theextension direction of the first magnetic shielding portion under theaction of the magnetic field, and the motor carrier stably move parallelto the first magnetic shielding portion. In addition, the magneticshielding component of the actuator is fastened to the base. In thiscase, when the actuating device is installed on an electronic device,installation can be completed by directly fastening the base to theelectronic device. This can improve installation efficiency of theactuating device in the electronic device, and ensures a more compactstructure of the entire actuating device.

In a possible implementation, the power supply apparatus is connected tothe motor carrier, so that the power supply apparatus can move with themotor carrier, to form a stable and controllable current in the coilfastened to the motor carrier. This produces a stable driving force forthe coil, an implement stable driving of the motor carrier.

In a possible implementation, the power supply apparatus furtherincludes a flexible printed circuit board.

The flexible printed circuit board includes a fixing portion and amovable portion connected to the fixing portion. The fixing portion isconnected to the base. One end of the movable portion is connected tothe motor carrier, and at least a part of the movable portion extends ina movement direction of the motor carrier.

One end of the movable portion of the flexible printed circuit board ofthe power supply apparatus is connected to the motor carrier, so thatthe motor carrier drives the movable portion to move stably, to stablysupply power to the coil. In addition, the movable portion is connectedto the base by using the fixing portion, so that the flexible printedcircuit board ensures stable transmission of a current and a signalbetween the flexible printed circuit board and a main control boardoutside the base, further ensuring a stable current input to the coil.

In a possible implementation, one end that is of the movable portion andthat is connected to the motor carrier is configured as an arc-shapedsection. The movable portion is connected to the motor carrier by usingthe arc structure, to prevent one end that is of the flexible printedcircuit board and that is connected to the motor carrier from beingbroken and ensure the stable current input to the coil.

In a possible implementation, one end of the movable portion is providedwith a reinforcement component, and the movable portion is connected tothe motor carrier by using the reinforcement component. This can improveconnection strength between the flexible printed circuit board and themotor carrier, to improve reliability for the movable portion of theflexible printed circuit board to move with the motor carrier.

In a possible implementation, the flexible printed circuit board furtherincludes a transition portion, and the fixing portion is connected tothe movable portion by using the transition portion, so that the entiremovable portion can extend in a movement direction of the motor carrier.In this case, the motor carrier can drive the movable portion to moveparallel to the second magnetic shielding portion for a longer stroke,and stability of the fixing portion is not affected when the motorcarrier drives the movable portion to move in the movement direction.

In a possible implementation, the actuating device further includes aposition detection apparatus.

The position detection apparatus includes a Hall element and a magneticsensing component. The Hall element is disposed on the motor carrier,and the magnetic sensing component is disposed on the base. Both theHall element and the power supply apparatus are in a signal connectionto a processor of the camera module.

The Hall element is configured to detect magnetic field strength of themagnetic sensing component, and send a signal to the processor when theHall element detects that the magnetic field strength of the magneticsensing component reaches a preset threshold. The processor controls,based on the signal, the power supply apparatus to stop supplying powerto the coil.

The Hall element and the magnetic sensing component are disposed, todetect and control a movement position of the motor carrier, so as toimplement closed-loop control of the motor carrier. In addition, theHall element is fastened to the motor carrier, so that the power supplyapparatus located on the motor carrier stably supplies power to the Hallelement, ensuring normal operation of the Hall element.

In a possible implementation, the motor carrier is connected to thefirst magnetic shielding portion, and the coil is connected to the base.The base is provided with an avoidance passage for the magneticshielding component to move.

The coil is connected to the base, so that the coil remains stable. Themotor carrier is connected to the first magnetic shielding portion. Inthis case, the energized coil produces an Ampere force parallel to thefirst magnetic shielding portion under the action of the magnetic field.Due to action and reaction forces, the Ampere force drives the magneticshielding component to stably move in the avoidance passage in theextension direction of the first magnetic shielding portion, to drivethe motor carrier to stably move parallel to the first magneticshielding portion.

In a possible implementation, the power supply apparatus is connected tothe base, to stably supply power to the coil disposed on the base, sothat the magnetic shielding component stably reciprocates through thecoil. In addition, the power supply apparatus is connected to the base,to simplify a structure of the motor carrier. This improves installationefficiency of the actuating device, and reduces a load of the motorcarrier, so that the magnetic shielding component can effectively drivethe motor carrier to move.

In a possible implementation, the actuating device further includes aposition detection apparatus.

The position detection apparatus includes a Hall element and a magneticsensing component. The Hall element is disposed on the base, and themagnetic sensing component is disposed on the motor carrier. Both theHall element and the power supply apparatus are in a signal connectionto a processor of the camera module.

The Hall element is configured to detect magnetic field strength of themagnetic sensing component, and send a signal to the processor when theHall element detects that the magnetic field strength of the magneticsensing component reaches a preset threshold. In this case, theprocessor controls the power supply apparatus to stop supplying power tothe coil.

The Hall element and the magnetic sensing component are disposed, todetect and control a movement position of the motor carrier, so as toimplement closed-loop control of the motor carrier. In addition, theHall element is fastened to the base, so that the power supply apparatuson the base stably supplies power to the Hall element, ensuring normaloperation of the Hall element. In addition, both the Hall element andthe power supply apparatus are disposed on the base, so that aninstallation structure of the motor carrier is further simplified, and astructure of the entire actuating device is more reasonable and compact.

In a possible implementation, the motor carrier includes two oppositelydisposed carriers. The two carriers are respectively configured toconnect to two lens connection portions that are located on two sides ofan axis of the lens.

There are at least two actuators. The at least two actuators arerespectively connected to two opposite carriers, so as to drive the twocarriers to move, to drive the lens to move.

The motor carrier is configured to include two opposite carriers. Thetwo carriers are respectively connected to two ends of the axis of thelens, so that the lens is stably fastened to the motor carrier. Duringoperation, the two actuators respectively drive the two carriers tomove, to implement stable driving of the lens. This ensures that thelens stably moves in a movement direction of the two carriers, andimplements long range zooming.

In a possible implementation, in the plurality of motor carriers,

each carrier on a same side is respectively connected to a correspondingcoil in the actuator, and the first magnetic shielding portion in theactuator is connected to the base. In this case, after each coil isenergized, the carriers on the same side can be simultaneously driven.

Alternatively, each carrier on a same side is connected to the firstmagnetic shielding portion in the actuator, and all coils of theactuator are connected to the base. In this case, an Ampere forceparallel to the extension direction of the first magnetic shieldingportion under the action of the magnetic field is generated in theenergized coil. According to the action force and the reaction force,the first magnetic shielding portion in the actuator drives theplurality of carriers on the same side to move in the extensiondirection of the first magnetic shielding portion, so that the pluralityof motor carriers are simultaneously driven. The quantity of actuatorsis reduced, and a structure and an installation process of the entireactuating device are simplified.

In a possible implementation, two first guide rails are disposed side byside on the base, the two carriers are respectively sleeved oncorresponding first guide rails, and each carrier is driven by theactuator to move along a corresponding first guide rail, so that thecarrier moves along a straight line under support of the first guiderail, ensuring stable zooming of the lens.

In a possible implementation, the camera module includes two secondguide rails correspondingly disposed on sides that are of the two firstguide rails and that are away from a bottom of the base. The secondguide rails are disposed parallel to the first guide rails, and the twolens connection portions are respectively sleeved on the second guiderails. Each lens connection portion is driven by the carrier to movealong a corresponding second guide rail.

A buffer is disposed between each carrier and the lens connectionportion to absorb parallelism tolerance between the first guide rail andthe second guide rail that are vertically disposed, so that the carrierand the lens from is not stuck due to close contact in a moving process,and the lens and the motor carrier can decouple from each other.

In a possible implementation, the buffer is a spring plate, to simplifya structure of the buffer and improve installation efficiency of theactuating device.

In a possible implementation, the motor carrier further includes aholding portion.

Two ends of the holding portion are respectively connected to twoopposite carriers, and the holding portion is configured to hold thelens. Disposition of the holding portion increases an action areabetween the lens and the motor carrier, improves stability of the lenson the motor carrier, and ensures that the motor carrier stably drivesthe lens.

In a possible implementation, at least a part of a side surface that isof each carrier and that faces toward the lens is configured as anarc-shaped surface that fits a side wall shape of the lens. This canimprove a degree of fit between a side wall of the lens and a side wallof the carrier, and reduce an installation gap between the lens and themotor carrier, so that the installed actuating device is more compact.In addition, the foregoing disposition also avoids damage to the lenscaused by a side wall that is of the carrier and that faces toward thelens when the lens is installed on the motor carrier.

An embodiment of this application further provides a camera module,including at least one lens and the actuating device.

An actuator of the actuating device is connected to the lens by using amotor carrier, to drive the lens to move in a specified direction.

In this application, the actuating device is disposed in the cameramodule to drive the lens to move in the specified direction, toimplement a long range zooming process of the lens. With a simplestructure, the actuating device effectively reduces manufacturing andinstallation difficulties of the entire camera module. In addition, eachcomponent is at lower costs than a stepper motor, reducing manufacturingcosts of the entire camera module.

An embodiment of this application further provides an electronic device,including a housing and the camera module, where the camera module isdisposed on the housing.

In this application, the camera module is disposed in the electronicdevice, to implement long range zooming of the camera module of theelectronic device, and ensure functions of long range shooting with along focal length and wide-angle shooting with a short focal length ofthe electronic device. This simplifies a structure of the electronicdevice, and reduces manufacturing and installation difficulties. Inaddition, each component is at lower costs than a stepper motor,reducing manufacturing costs of the entire electronic device.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is an example schematic diagram of a structure of a mobileterminal according to this application;

FIG. 2 is an example sectional view along a line A-A in FIG. 1 ;

FIG. 3 is an example schematic diagram of a first structure of anactuating device in FIG. 2;

FIG. 4 is an example schematic diagram of a partial structure in FIG. 3;

FIG. 5 is an example schematic diagram of the structure of an actuatorin FIG. 3 ;

FIG. 6 is an example sectional view along a line B-B in FIG. 5 ;

FIG. 7 is an example top view of FIG. 3 ;

FIG. 8 is an example installation diagram of an actuating device and alens in FIG. 3 ;

FIG. 9 is an example sectional view along a line C-C in FIG. 7 ;

FIG. 10 is an example partial schematic diagram of an internal structurein FIG. 3 ;

FIG. 11 is an example top view of a power supply apparatus in FIG. 10 ;

FIG. 12 is an example main view of a power supply apparatus in FIG. 10 ;

FIG. 13 is an example schematic diagram of a second structure of anactuating device in FIG. 2 ;

FIG. 14 is an example schematic diagram of a partial split structure ofan actuating device in FIG. 13 ;

FIG. 15 is an example main view of FIG. 14 ;

FIG. 16 is an example schematic diagram of a third structure of anactuating device in FIG. 2 ; and

FIG. 17 is an example sectional view of a part along a line D-D in FIG.16 .

DESCRIPTION OF REFERENCE NUMERALS

-   -   10: Housing; 20: Camera module;    -   11: Light transmission area; 21: Lens; 22: Actuating device; 23:        Main control board; 24: Second guide rail;    -   211: Lens connection portion; 212: Lens body portion; 221: Motor        carrier; 222: Actuator; 223: Base; 224: Position detection        apparatus; 225: First guide rail; 226: Buffer;    -   2211: Carrier; 2212: Holding portion; 2213: Holder; 2214:        Installation plate; 2215: Installation position; 2221: Actuating        magnetic component, 2222: Magnetic shielding component, 2223:        Power supply apparatus; 2224: Coil; 2231: Sub-base; 2232:        Reinforcement base; 2233: Light avoidance opening; 2234:        Installation base; 2241: Hall element; 2242: Magnetic sensing        component;    -   2211 a: Arc-shaped surface; 2221 a: First part; 2221 b: Second        part; 2222 a: First magnetic shielding portion; 2222 c: Second        magnetic shielding portion; 2222 b: Third magnetic shielding        portion; 2222 d: Fourth magnetic shielding portion; 2223 a:        Fixing portion; 2223 b: Movable portion; 2223 c: Arc-shaped        section; 2223 d: Reinforcement component; 2223 e: Transition        portion; 2223 f: Electrical connection terminal; 2231 a:        Avoidance passage; 2224 a: Left half part; and 2224 b: Right        half part.

DESCRIPTION OF EMBODIMENTS

Terms used in implementations of this application are only used forexplaining specific embodiments of this application, but are notintended to limit this application.

A shooting function has gradually become basic configuration of ahandheld communication device such as a mobile phone, a personal digitalassistant, and a laptop computer. With a higher shooting requirement ofa user on a mobile terminal such as a mobile phone, conventionalshooting cannot meet a requirement of the user. Long range shooting witha long focal length performed by, for example, a periscope cameramodule, and wide-angle shooting with a short focal length, performed by,for example, a conventional CCM module can be complementary to eachother. Therefore, their combination has become a standard configurationof a mobile terminal that is currently popular with the user. The cameramodule that meets shooting requirements of different focal lengths is anoptical zoom camera module.

FIG. 1 is a schematic diagram of a structure of a mobile terminalaccording to this application. FIG. 2 is a sectional view along a lineA-A in FIG. 1 . Refer to FIG. 1 and FIG. 2 . A mobile phone is used asan example to describe a camera module in a mobile terminal in thisapplication. Refer to FIG. 1 and FIG. 2 . The camera module 20 isdisposed on a housing 10 of the mobile phone. The camera module 20includes a plurality of lenses 21 that are spaced from each other andface toward an interior of the housing 10 along an axis of a lighttransmission area 11 on the housing 10. The plurality of lenses 21 areconnected to an actuating device 22. The actuating device 22 is in asignal connection to a main control board 23. The main control board 23controls the actuating device 22 to drive the plurality of lenses 21 toapproach or move away from the light transmission area 11 on the housing10, to implement zooming of the camera module. This can meetrequirements of a user for long range shooting with a long focal lengthand short range shooting with a short focal length.

To implement a large-scale optical zooming function of the camera module20, the actuating device 22 needs to be able to drive the lens 21 toimplement long-stroke movement. In a related technology, the actuatingdevice 22 includes a stepper motor and a screw thread that is installedon a ball screw on the plurality of lenses 21. The stepper motor isconnected to the ball screw through the ball screw that acts as anattachment plate. During operation, the stepper motor drives the ballscrew to rotate, to drive the plurality of lenses 21 to move in anextension direction of the ball screw, so as to implement the opticalzooming of the camera module 20.

However, costs of the stepper motor configured to drive the lens 21 tomove are high, and requirements on machining accuracy of the ball screwis high, therefore there is a challenge for manufacturing the entirecamera module 20.

Embodiments of this application provide the actuating device, the cameramodule, and an electronic device. An actuator in the actuating device isconfigured to include an actuating magnetic component, a coil, and apower supply apparatus. The power supply apparatus is electricallyconnected to the coil, and the coil is disposed in a magnetic field ofthe actuating magnetic component. When a current is supplied to thecoil, the coil moves relative to the actuating magnetic component on apath parallel to a specified direction under an action of the magneticfield. In this case, the motor carrier is connected to the coil or theactuating magnetic component, so that the motor carrier connected to thecoil or the actuating magnetic component moves along the path parallelto the specified direction, to drive the lens of the camera module tomove, so that zooming of the camera module is completed. In theactuating device in this application, a movement stroke of the motorcarrier is related to the length of the actuating magnetic component.Therefore, the motor carrier can implement long-stroke movement byextending the length of the actuating magnetic component, to increase afocal length adjustment range of the camera module and improve userexperience. In addition, with a simple structure, the actuating deviceeffectively reduces manufacturing and installation difficulties. Inaddition, each component is at lower costs than a stepper motor,reducing manufacturing costs of the entire camera module.

An actuator with a special structure drives the motor carrier connectedto the lens, to implement long range zoom of the lens and reducemanufacturing and installation difficulties of the actuating device. Inaddition, each component is at lower costs than a stepper motor,reducing manufacturing costs of the entire camera module. The followingdescribes the actuating device in embodiments of this application indetail by using three different embodiments.

Embodiment 1

FIG. 3 is a schematic diagram of a first structure of an actuatingdevice in FIG. 2 . FIG. 4 is a schematic diagram of a partial structurein FIG. 3 . FIG. 5 is a schematic diagram of the structure of anactuator in FIG. 3 . Refer to FIG. 3 . An embodiment of this applicationprovides the actuating device 22. The actuating device 22 may include atleast one motor carrier 221 and at least one actuator 222. Each motorcarrier 221 is connected to a corresponding lens 21 in the camera module20. The actuator 222 is configured to drive the motor carrier 221 tomove in a direction of a principal axis l (as shown in FIG. 2 ) of thelens 21. In this case, the lens 21 is driven to move in a specifieddirection (as indicated by an x direction in FIG. 4 ), and zooming ofthe lens 21 is implemented.

It should be noted that, in this embodiment of this application, aplurality of actuators 222 may simultaneously drive one motor carrier221, or one actuator 222 may drive one motor carrier 221. That is, itmay be considered that each motor carrier 221 corresponds to one or moreactuators 222, and each motor carrier 221 is driven by corresponding oneor more actuators 222. In other words, one or more actuators 222 alsocorrespond to one motor carrier 221, and are configured to drive acorresponding motor carrier 221.

Refer to FIG. 3 . In an actual application, the camera module 20includes a plurality of coaxial lenses 21 that are sequentially spacedfrom each other, in other words, the plurality of lenses 21 are spacedfrom each other in a direction. To implement long-stroke movement of theplurality of lenses 21, a plurality of motor carriers 221 in thisembodiment may be sequentially spaced from each other in the directionof the principal axis/(as shown in FIG. 2 ) of the lens 21. As shown inFIG. 3 , each motor carrier 221 is connected to the corresponding lens21, so that the actuating device 22 simultaneously drives the pluralityof lenses 21 stably.

Certainly, in this embodiment of this application, it is possible thatwhen the camera module 20 has one lens 21, the actuating device 22includes a structure of one motor carrier 221.

It may be understood that the specified direction is consistent with anextension direction of the principal axis l of the lens 21.

As show in FIG. 4 and FIG. 5 , one actuator 222 may include at least oneactuating magnetic component 2221, a power supply apparatus 2223, and atleast one coil 2224. The actuating magnetic component 2221 may be acomponent having a magnetic field, such as a magnet. The power supplyapparatus 2223 is an apparatus that provides an electrical signal to thecoil 2224.

In this application, when there are a plurality of actuators 222, theactuators 222 may share the power supply apparatus 2223, or share theactuating magnetic component 2221. For example, one power supplyapparatus 2223 supplies power to coils 2224 in a plurality of actuators222. Certainly, each actuator 222 may also use one independent powersupply apparatus 2223. Similarly, the actuators 222 may also share anactuating magnetic component 2221. For example, when there are twoactuators 222 and each actuator 222 includes one coil 2224, these coils2224 may share one actuating magnetic component 2224 (as shown in anexample in FIG. 4 ). Certainly, one actuating magnetic component 2224(as shown in an example in FIG. 14 ) may alternatively be separatelyconfigured for the two coils 2224.

Each motor carrier 221 is connected to the at least one coil 2224 of oneor more corresponding actuators 222, and the at least one actuatingmagnetic component 2221 is fixedly connected to the base 223.

In this application, an example in which one power supply apparatus 2223supplies power to one actuator 222 is used for description.

As show in FIG. 5 , the power supply apparatus 2223 is electricallyconnected to each coil 2224, to supply power to each coil 2224, so thateach coil 2224 generates a stable loop current. Specifically, the powersupply apparatus 2223 may include a flexible printed circuit board. Oneend of the flexible printed circuit board is electrically connected tothe coil 2224, and the other end of the flexible printed circuit boardis electrically connected to the main control board 23 of the cameramodule 20. The main control board 23 is electrically connected to abattery of the electronic device. The battery transmits a current to thecoil 2224 by using the main control board 23 and the flexible printedcircuit board. In addition, the main control board 23 can control apower supply parameter such as power supply duration, to transmit astable and controllable current to the coil 2224.

FIG. 6 is a sectional view along a line B-B in FIG. 5 . As show in FIG.5 and FIG. 6 , each coil 2224 in this embodiment of this application islocated in the magnetic field of the actuating magnetic component 2221.Under the action of the magnetic field, the energized coil 2224generates a current. An Ampere force parallel to the principal axis l ofthe lens 21 is produced in the current under the action of the magneticfield. Under the action of the Ampere force, the coil 2224 movesrelative to the actuating magnetic component 2221 on a path parallel toa specified direction.

It may be understood that a cross-sectional shape of the coil 2224 maybe any structure, provided that the energized coil 2224 has an Ampereforce in a specified direction (including an Ampere force component inthe specified direction). In this case, movement of the coil 2224 in adirection other than the specified direction may be restricted, so thatthe coil 2224 moves relative to the actuating magnetic component 2221only on the path parallel to the specified direction.

For example, a limiting portion (not shown) may be disposed in thecamera module 20. The limiting portion is configured to limit themovement of the coil 2224 in a direction other than the specifieddirection. For example, the limiting portion may be a fixing plate. Thefixing plate is disposed in a direction that has an included angle withthe specified direction of the coil 2224, so that the coil 2224 movesonly in the specified direction. A structure of the limiting portion isnot specifically limited in this embodiment of this application.

It should be noted that for the Ampere force generation principle,reference may be directly made to related content in a conventionaltechnology.

Refer to FIG. 4 . In this embodiment of this application, each motorcarrier 221 is connected to a corresponding coil 2224. Under the actionof the magnetic field, the energized coil 2224 drives the motor carrier221 to move in the direction of the principal axis/(a directionindicated by x in FIG. 4 ) of the lens 21. In this case, the lens 21 isdriven to move in a specified direction, and a zooming function isimplemented.

One coil 2224 and one motor carrier 221 are used as an example. Theactuating magnetic component 2221 may be connected to the camera module20 or a stationary component in the mobile phone, to ensure that theactuating magnetic component 2221 is fixed. The coil 2224 is connectedto the motor carrier 221. In this case, the energized coil 2224 moves inthe x direction under the action of the magnetic field, to drive themotor carrier 221 to move in the x direction. This can implement stablemovement of the lens 21 connected to the motor carrier 221 and a longrange zooming function.

In this embodiment of this application, the motor carrier 221 may beconnected to the coil 2224 in a plurality of manners. For example, themotor carrier 221 may be connected to the coil 2224 through fasteningsuch as bonding, clamping, or screw connection.

Certainly, refer to FIG. 4 . As mentioned in the following, a holder2213 may be disposed on the motor carrier 221. The holder 2213 isprovided with a limiting hole, and the holder 2213 is disposed on thethird magnetic shielding portion 2222 b, and the coil 2224 sleeved onthe third magnetic shielding portion 2222 b is clamped into the limitinghole of the holder 2213. In this case, when moving on the third magneticshielding portion 2222 b, the energized coil 2224 can drive, by usingthe holder 2213, the motor carrier 221 to move synchronously. Aconnection manner between the motor carrier 221 and the coil 2224 is notspecifically limited in this embodiment of this application.

A direction of an ampere force acting on the coil 2224 may be parallelto an extension direction of the actuating magnetic component 2221. Inthis case, the extension direction of the actuating magnetic component2221 is consistent with the direction (in other words, the specifieddirection) of the principal axis l of the lens 21. The energized coil2224 may drive the motor carrier 221 to move in the extension directionof the actuating magnetic component 2221, so that the lens 21 connectedto the motor carrier 221 moves in the specified direction.

It may be understood that, because the Ampere force in the coil 2224 isgenerated under the action of the magnetic field of the actuatingmagnetic component 2221, in the actuating device in this application, amovement stroke of the motor carrier 221 is related to the length of theactuating magnetic component 2221. In this case, the motor carrier 221can implement long-stroke movement by extending the length of theactuating magnetic component 2221, to increase a focal length adjustmentrange of the camera module 20 and improve user experience. In addition,with a simple structure, the actuating device 22 effectively reducesmanufacturing and installation difficulties. In addition, each componentis at lower costs than a stepper motor, reducing manufacturing costs ofthe entire camera module 20.

Still refer to FIG. 5 . The actuator 222 may further include a magneticshielding component 2222. Each magnetic shielding component 2222includes a first magnetic shielding portion 2222 a and two secondmagnetic shielding portions 2222 c. The two second magnetic shieldingportions 2222 c are oppositely disposed at two ends of the firstmagnetic shielding portion 2222 a. The first magnetic shielding portion2222 a and the two second magnetic shielding portion 2222 c encloseinstallation space of the magnetic shielding component 2222. Theactuating magnetic component 2221 is located in the installation space,and is fastened to the first magnetic shielding portion 2222 a. Themotor carrier 221 may be connected to the coil 2224.

An extension direction of the first magnetic shielding portion 2222 a isconsistent with the foregoing specified direction. In this case, theenergized coil 2224 may drive the motor carrier 221 to move in theextension direction (a direction indicated by a in FIG. 5 ) of the firstmagnetic shielding portion 2222 a, so that the lens 21 connected to themotor carrier 221 moves in the specified direction.

In this embodiment of this application, the extension direction of thefirst magnetic shielding portion 2222 a is consistent with the directionof the principal axis of the lens 21.

During specific disposition, the first magnetic shielding portion 2222 aand the second magnetic shielding portion 2222 c may be plate-likecomponents having a magnetic shielding function, and the plate-likecomponents may be made of a soft magnetic material such as permalloy ora ferro-aluminum alloy. In this way, the magnetic field generated by theactuating magnetic component 2221 does not cause interference to acomponent outside the magnetic shielding component 2222, and a magneticfield in an external environment does not cause interference to themagnetic field generated by the actuating magnetic component 2221.

Still refer to FIG. 5 . To further improve magnetic shielding effect ofthe magnetic shielding component 2222, the actuating magnetic component2221 in some examples may further include a third magnetic shieldingportion 2222 b. The third magnetic shielding portion 2222 b and thefirst magnetic shielding portion 2222 a are spaced from each other anddisposed in parallel, and two ends of the third magnetic shieldingportion 2222 b are connected to the two second magnetic shieldingportions 2222 c. In this case, the magnetic shielding component 2222forms a stable ring structure, to improve structure stability of themagnetic shielding component 2222. In addition, the closed magneticshielding component 2222 further isolates the magnetic field.

Refer to FIG. 5 . To improve stability of the third magnetic shieldingportion 2222 b, a bent portion extends from two ends of the thirdmagnetic shielding portion 2222 b in a length direction toward innersurfaces of the two second magnetic shielding portions 2222 c. The bentportion is separately in close contact with the inner surfaces of thetwo second magnetic shielding portions 2222 c, to increase a contactarea between the two ends of the third magnetic shielding portion 2222 band the two second magnetic shielding portions 2222 c. This can improveconnection strength between the third magnetic shielding portion 2222 band the two second magnetic shielding portions 2222 c, to improvestructural stability of the entire magnetic shielding component 2222.

In some examples, to simplify a structure of the magnetic shieldingcomponent 2222, the first magnetic shielding portion 2222 a, the thirdmagnetic shielding portion 2222 b, and the two second magnetic shieldingportions 2222 c of the magnetic shielding component 2222 are integrallyformed. This can improve installation efficiency of the magneticshielding component 2222, and improve structural strength of themagnetic shielding component 2222.

In this embodiment of this application, two ends of the actuatingmagnetic component 2221 separately extend to two ends of the firstmagnetic shielding portion 2222 a in an extension direction, and thecoil 2224 is movably sleeved on the third magnetic shielding portion2222 b. In this case, the coil 2224 can be exposed to a perpendicularmagnetic induction line of the actuating magnetic component 2221 at anyposition in the length direction of the third magnetic shielding portion2222 b.

As shown in FIG. 6 , a direction indicated by arrows b is a direction inwhich the magnetic induction line generated by the actuating magneticcomponent 2221 acts on the coil 2224. In this embodiment, the actuatingmagnetic component 2221 may be a magnet disposed in the extensiondirection of the first magnetic shielding portion 2222 a.

During specific installation, the two ends of the actuating magneticcomponent 2221 may alternatively be separately connected to the twosecond magnetic shielding portions 2222 c, to improve stability of theactuating magnetic component 2221 in the magnetic shielding component2222. In this case, the magnetic field generated by the actuatingmagnetic component 2221 is stably perpendicular to a side that is of thecoil 2224 and that faces toward the actuating magnetic component 2221.

It may be understood that because a side that is of the coil 2224 andthat is away from the actuating magnetic component 2221 is locatedoutside the magnetic shielding component 2222, the side that is of thecoil 2224 and that is away from the actuating magnetic component 2221 isnot affected by the magnetic field generated by the magnetic shieldingcomponent 2222.

The coil 2224 in this embodiment of this application is sleeved on thethird magnetic shielding portion 2222 b, and the first magneticshielding portion 2222 a and the third magnetic shielding portion 2222 bare spaced from each other and disposed in parallel. In this case, atleast some coils 2224 inside the magnetic shielding component 2222 areperpendicular to a magnetic induction line that is of the actuatingmagnetic component 2221 and that passes toward the third magneticshielding portion 2222 b. This can ensure that the energized coil 2224has an Ampere force parallel to the extension direction of the firstmagnetic shielding portion 2222 a, and an Ampere force acting on anenergized coil 2224 inside the magnetic shielding component 2222 has acomponent in the extension direction (a direction indicated by a in FIG.5 ) of the third magnetic shielding portion 2222 b, so that the coil2224 can move along the third magnetic shielding portion 2222 b.

The coil 2224 may be a ring coil, a rectangular coil, a square coil, ora coil in another shape that is sleeved on the third magnetic shieldingportion 2222 b.

For example, as shown in FIG. 5 and FIG. 6 , the coil 2224 is arectangular coil, in other words, a cross-sectional shape of the coil2224 is a rectangle. The rectangular coil includes a left part, a rightpart, an upper part, and a lower part.

The left and right parts are respectively located on left and rightsides of the third magnetic shielding portion 2222 b. In other words,the two parts are respectively located on a side that is of the thirdmagnetic shielding portion 2222 b and that faces toward the firstmagnetic shielding portion 2222 a and a side that is of the thirdmagnetic shielding portion 2222 b and that is away from the firstmagnetic shielding portion 2222 a. Both the two parts are perpendicularto the extension direction of the third magnetic shielding portion 2222b. A magnetic field generated by the actuating magnetic component 2221due to a magnetic effect acts on the coil 2224, and is perpendicular toa current on a side that is of the coil 2224 and that is close to thefirst magnetic shielding portion 2222 a, so that the side is subject toan Ampere force that points toward the extension direction of the thirdmagnetic shielding portion 2222 b. This can increase a driving force ofthe coil 2224 in the extension direction of the third magnetic shieldingportion 2222 b, so that the motor carrier 221 stably moves in theextension direction of the third magnetic shielding portion 2222 b.

Refer to FIG. 6 . The power supply apparatus 2223 provides a current ina clockwise direction, in other words, a direction indicated by an arrowc, to the coil 2224. The current on the side that is of the coil 2224and that is close to the first magnetic shielding portion 2222 a pointsupward. After the current is exposed to a perpendicular magnetic fieldon the current, an Ampere force that is perpendicular to paper and facestoward an interior of the paper is generated. In other words, in FIG. 5, the Ampere force is parallel to an extension direction of the thirdmagnetic shielding portion 2222 b and points to the right, that is, adirection indicated by an arrow a.

However, when the power supply apparatus 2223 provides a current in acounterclockwise direction to the coil 2224, the current on the sidethat is of the coil 2224 and that is close to the first magneticshielding portion 2222 a points downward. After the current is subjectto a magnetic field perpendicular to the current, an Ampere force thatis perpendicular to paper and faces toward an exterior of the paper isgenerated. In other words, in FIG. 5 , the Ampere force is parallel toan extension direction of the third magnetic shielding portion 2222 band points to the left, that is, an opposite direction of the directionindicated by the arrow a.

The upper and lower parts of the coil 2224 are respectively located onan upper side and a lower side of the third magnetic shielding portion2222 b. After the two parts are energized, a current direction on thetwo parts is parallel to a direction of the magnetic induction line, andno Ampere force is generated. Therefore, no driving force in anydirection is generated on the two parts.

The third magnetic shielding portion 2222 b in this embodiment of thisapplication also limits the movement of the coil 2224, to prevent thecoil 2224 from moving in a direction other than the extension directionof the third magnetic shielding portion 2222 b. This further ensuresthat the coil 2224 drives the motor carrier 221 to move only in theextension direction of the third magnetic shielding portion 2222 b.

In this embodiment, the magnetic shielding component 2222 may beconnected to the camera module 20 or a stationary component in themobile phone. For example, the first magnetic shielding portion 2222 aof the magnetic shielding component 2222 is fastened to the cameramodule 20 or the stationary component of the mobile phone, to ensurethat the magnetic shielding component 2222 is fixed and the coil 2224 isconnected to the motor carrier 221. In this case, the energized coil2224 moves in the extension direction of the third magnetic shieldingportion 2222 b under the action of the magnetic field of the actuatingmagnetic component 2221, to drive the motor carrier 221 to move parallelto the extension direction of the third magnetic shielding portion 2222b, that is, the direction indicated by the arrow a. This can implementstable movement of the lens 21 connected to the motor carrier 221 and along range zooming function.

It should be noted that the extension direction of the third magneticshielding portion 2222 b, in other words, the direction indicated by thearrow a, is parallel to an extension direction of the axis l of the lens21. This can ensure that when the coil 2224 drives the motor carrier 221to move on the third magnetic shielding portion 2222 b, the lens 21 canmove in the axis direction of the lens 21, that is, the specifieddirection, to implement a zooming process of the camera module 20.

Refer to FIG. 4 . For example, when the power supply apparatus 2223provides the clockwise current to the coil 2224, the coil 2224 drivesthe motor carrier 221 to move on the third magnetic shielding portion2222 b in the direction indicated by an arrow x, to dive the lens 21 tomove in the direction indicated by the arrow x. When the power supplyapparatus 2223 provides the counterclockwise current to the coil 2224,the coil 2224 drives the motor carrier 221 to move on the third magneticshielding portion 2222 b in an opposite direction of the arrow x, todrive the lens 21 to move in the opposite direction of the arrow x.

It may be understood that a motion displacement of the motor carrier 221is a motion displacement of the coil 2224 on the third magneticshielding portion 2222 b, that is, the motion displacement of the motorcarrier 221 is equal to an extended length of the third magneticshielding portion 2222 b minus a length of the coil 2224 in theextension direction of the third magnetic shielding portion 2222 b.Therefore, in this embodiment of this application, the motiondisplacement of the motor carrier 221 may be adjusted by adjusting theextended length of the third magnetic shielding portion 2222 b. This canfurther adjust a zooming range of the lens 21.

Based on the foregoing description, it can be learned that in thisembodiment of this application, the actuator 222 can implementlong-stroke drive on the motor carrier 221, to ensure long range zoomingof the lens 21. A movement stroke of the motor carrier 221 is related tothe length of the third magnetic shielding portion 2222 b. Therefore,the motor carrier 221 can implement long-stroke motion by extending thelength of the third magnetic shielding portion 2222 b, to increase afocal length adjustment range of the camera module 20 and improve userexperience.

In addition, with a simple structure, the actuating device 22effectively reduces manufacturing and installation difficulties. Inaddition, each component is at lower costs than a stepper motor,reducing manufacturing costs of the entire camera module 20.

In addition, the two ends of the actuating magnetic component 2221extend to the two ends of the third magnetic shielding portion 2222 b.In this case, when moving to any position on the third magneticshielding portion 2222 b in the extension direction, the coil 2224 isalways in a stable magnetic field of the actuating magnetic component2221, and a current that is in the coil 2224 and is perpendicular to themagnetic induction line is subject to a stable ampere force. This canensure that the energized coil 2224 stably moves on the third magneticshielding portion 2222 b, to drive the motor carrier 221.

FIG. 7 is a top view of FIG. 3 . FIG. 8 is an installation diagram ofthe actuating device and the lens in FIG. 3 . Refer to FIG. 3 , FIG. 7 ,and FIG. 8 . To improve structural stability of the actuating device 22in this embodiment of this application, the actuating device 22 mayfurther include a base 223. The magnetic shielding component 2222 of theactuator 222 is connected to the base 223. For example, the firstmagnetic shielding portion 2222 a of the magnetic shielding component2222 is connected to the base 223, or the two second magnetic shieldingportions 2222 c of the magnetic shielding component 2222 may be bothconnected to the base 223.

Certainly, in some examples, both the first magnetic shielding portion2222 a and the two second magnetic shielding portions 2222 c may be allconnected to the base 223, to further improve connection strengthbetween the actuator 222 and the base 223. During installation, themagnetic shielding component 2222 of the actuator 222 is fastened to thebase 223, and then the base 223 is installed in a housing 10 of theelectronic device such as a mobile phone, to implement stableinstallation of the actuating device 22 in the electronic device.

The magnetic shielding component 2222 of the actuator 222 is installedon the base 223, so that the actuating device 22 is stably fastened tothe electronic device through the base 223, to ensure that the magneticshielding component 2222 cannot move. In this case, the energized coil2224 stably moves in the extension direction of the third magneticshielding portion 2222 b under the action of the magnetic field, todrive the motor carrier 221 to stably move parallel to the extensiondirection of the third magnetic shielding portion 2222 b.

In addition, the magnetic shielding component 2222 of the actuator 222is fastened to the base 223. In this case, when the actuating device 22is installed on the electronic device, installation can be completed bydirectly fastening the base 223 to the electronic device. This canimprove installation efficiency of the actuating device 22 in theelectronic device, and ensures a more compact structure of the entireactuating device 22.

For example, if one lens 21 is driven, there may be one actuating device22 in this embodiment. During specific installation, there may be oneactuator 222 of the actuating device 22 in this embodiment of thisapplication, the magnetic shielding component 2222 of the actuator 222is fastened to the base 223, one end of the motor carrier 221 isconnected to a coil 2224 of the actuator 222, and the other end of themotor carrier 221 is connected to one end of the lens 21. Duringspecific operation, the power supply apparatus 2223 provides a currentto the coil 2224, and the coil 2224 drives the motor carrier 221 to moveparallel to the extension direction of the third magnetic shieldingportion 2222 b, to drive the lens 21 to move in the specified directionand implement the long range zooming of the lens 21.

In some examples, there may be two actuating devices 22. For example,one actuating device 22 may be separately disposed on two ends of theaxis l of the lens 21, and a motor carrier 221 of each actuating device22 is connected to a side wall on one end of the axis l of the lens 21.During operation, actuators 222 of the actuating devices 22 on the twoends of the axis l of the lens 21 respectively drive corresponding motorcarriers 221 to move, to implement stable drive of the lens 21 bysynchronously driving side walls at the two ends of the axis l of thelens 21. It may be understood that, in this example, the motor carrier221 in the actuating device 22 may be connected to only a side of thelens 21, and the two actuating devices 22 are configured tosimultaneously drive the two ends of the axis l of the lens 21.

FIG. 9 is a sectional view along a line C-C in FIG. 7 . Refer to FIG. 8and FIG. 9 . In a possible implementation, the motor carrier 221 mayinclude two oppositely disposed carriers 2211. An installation position2215 of the lens 21 is arranged between the two carriers 2211. Sidewalls at the two ends of the axis l of the lens 21 are respectivelyconnected to a corresponding carrier 2211.

In an actual application, lens connection portions 211 extend from theside walls at the two ends of the axis l of the lens 21, and the twocarriers 2211 are respectively connected to corresponding lensconnection portions 211. In this embodiment, there are at least twoactuators 222, and the at least two actuators 222 are respectivelyconnected to two opposite carriers 2211, so as to drive the two carriers2211 to move, to drive the lens 21 to move. A lens body portion 212 ofthe lens 21 and the lens connection portions 211 located on the two endsof the axis l of the lens 21 are usually integrally formed, to improvestructural strength of the lens 21.

As shown in FIG. 7 to FIG. 9 , the motor carrier 221 in this embodimentfurther includes a holding portion 2212. Two ends of the holding portion2212 are respectively connected to two opposite carriers 2211, and abottom of the lens 21 is supported on the holding portion 2212, toimprove stability of the lens 21 on the motor carrier 221.

Refer to FIG. 7 . To fasten actuators 222 corresponding to the twocarriers 2211, the base 223 in this embodiment may include twooppositely disposed sub-bases 2231. Actuators 222 that are of the twocarriers 2211 and that drive the motor carrier 221 are respectivelyfastened to corresponding sub-bases 2231. The motor carrier 221 islocated between the two sub-bases 2231, to ensure a more compactstructure of the entire actuating device 22.

During specific installation of the actuating device 22, the twosub-bases 2231 are fastened inside the housing 10 of the electronicdevice, to implement stable installation between the camera module 20and the electronic device.

Refer to FIG. 3 and FIG. 7 . To further improve structural stability ofthe base 223, a reinforcement base 2232 may be connected between one endof the two sub-bases 2231. The reinforcement base 2232 is disposed awayfrom a light transmission area 11 on the housing 10. A light avoidanceopening 2233 is arranged opposite to the reinforcement base 2232. Thelight avoidance opening 233 faces toward the light transmission area 11.In this case, a lens 21 inside the base 223 can implement external lighttransmission with the outside by using the light avoidance opening 233and the light transmission area 11, to ensure normal shooting of thecamera module 20.

The following describes a structure and a working principle of theactuating device 22 in this application by using an example in which onelens 21 is driven.

Refer to FIG. 7 and FIG. 8 . To drive the lens 21 to move, there are twoactuators 222 in this embodiment. Magnetic shielding components 2222 ofthe two actuators 222 are respectively connected to correspondingsub-bases 2231. Coils 2224 are respectively connected to correspondingcarriers 2211. The two lens connection portions 211 of the lens 21 arerespectively connected to corresponding carriers 2211.

During operation, a power supply apparatus 2223 of each actuator 222supplies power to a corresponding coil 2224, and the energized coil 2224drives, under the action of the magnetic field, the carrier 2211 to moveparallel to the extension direction of the third magnetic shieldingportion 2222 b. This can implement stable drive of the lens 21 betweenthe two carriers 2211, and improve reliability of long range zooming ofthe lens 21 implemented by the actuating device 22.

In this embodiment, the two carriers 2211 of the motor carrier 221 arerespectively connected to the lens connection portions 211 on the twoends of the axis l of the lens 21, so that the lens 21 is stablyfastened to the motor carrier 221, to ensure that the lens 21 and themotor carrier 211 move synchronously.

In this embodiment, when the carrier 2211 of the motor carrier 221 isconnected to the coil 2224, one end that is of the carrier 2211 and thatis away from the lens 21 may be directly fastened to the coil 2224. Inthis case, when moving along the third magnetic shielding portion 2222 bunder the action of the ampere force, the coil 2224 can drive thecarrier 2211 to move synchronously.

Refer to FIG. 3 and FIG. 7 . In some examples, a holder 2213 may bedisposed on a side that is of the carrier 2211 of the motor carrier 221and that is close to the third magnetic shielding portion 2222 b. Theholder 2213 is provided with a limiting hole, and the holder 2213 isdisposed on the third magnetic shielding portion 2222 b, and the coil2224 sleeved on the third magnetic shielding portion 2222 b is clampedinto the limiting hole of the holder 2213. In this case, when moving onthe third magnetic shielding portion 2222 b, the energized coil 2224 candrive, by using the holder 2213, the carrier 2211 to move synchronously.Disposition of the holder 2213 simplifies a connection structure betweenthe carrier 2211 and the coil 2224, so that installation between thecarrier 2211 and the coil 2224 is more convenient and quicker.

It may be understood that the width of the limiting hole on the holder2213 fits the width of the coil 2224, to ensure that the coil 2224 andthe holder 2213 move synchronously. The width of the coil 2224 isspecifically the width of the coil 2224 in the extension direction ofthe third magnetic shielding portion 2222 b. Similarly, the width of thelimiting hole is specifically the width of the limiting hole in theextension direction of the third magnetic shielding portion 2222 b.

In an actual application, a side surface of the lens 21 is usually anarc structure. To help install the lens 21 between two opposite carriers2211 of the motor carrier 221, at least a part of a side surface that isof each carrier 2211 and that faces toward a side wall of the lens 21may be configured as an arc-shaped surface 2211 a that fits a side wallshape of the lens 21, as shown in FIG. 4 and FIG. 8 . The side surfacethat is of the carrier 2211 and that faces toward the side wall of thelens 21 is configured as the arc-shaped surface 2211 a that fits theside wall shape of the lens 21, so that a degree of fit between the sidewall of the lens 21 and the side wall of the carrier 2211 is improved.This can reduce an installation gap between the lens 21 and the motorcarrier 221, so that the installed actuating device 22 is more compact.In addition, the foregoing disposition also avoids damage to the lens 21caused by a side wall that is of the carrier 2211 and that faces towardthe lens 21 when the lens 21 is installed on the motor carrier 221.

Refer to FIG. 7 . To ensure that the coil 2224 drives the carrier 2211of the motor carrier 221 to stably move along a straight line, two firstguide rails 225 are disposed side by side on the base 223 in thisembodiment. Each first guide rail 225 is fastened to a correspondingsub-base 2231, and a carrier 2211 located on each sub-base 2231 ismovably sleeved on a corresponding first guide rail 225, so that thecoil 2224 can drive each carrier 2211 to move along the first guide rail225, to ensure that each carrier 2211 moves along the straight line.

In addition, the first guide rail 225 also stably supports the carrier2211. It may be understood that an extension direction of each firstguide rail 225 is parallel to the extension direction of the thirdmagnetic shielding portion 2222 b, to ensure that a movement directionof the carrier 2211 on the first guide rail 225 is consistent with amovement direction of the coil 2224.

Refer to FIG. 8 . In an actual application, the camera module 20 furtherincludes two second guide rails 24 disposed side by side, and the twosecond guide rails 24 are correspondingly disposed on sides that are ofthe two first guide rails 225 and that are away from a bottom of thebase 223. The second guide rails 24 are disposed parallel to the firstguide rail 225, and the two lens connection portions 211 of the lens 21are respectively sleeved on corresponding second guide rails 24, so thatthe carrier 2211 can drive each lens connection portion 211 to movealong a corresponding second guide rail 24, to ensure that the lens 21stably moves along the axis I.

Refer to FIG. 8 . Due to a manufacturing tolerance, a parallelismtolerance between the first guide rail 225 and the second guide rail 24that are vertically disposed exists. In this embodiment, to absorb theparallelism tolerance, a buffer 226 is disposed between each carrier2211 and the lens connection portion 211. The parallelism tolerancebetween the first guide rail 225 and the second guide rail 24 isabsorbed through elastic deformation of the buffer 226, so that thecarrier 2211 and the lens 21 are not stuck due to close contact in amoving process, and the lens 21 and the motor carrier 221 decouple fromeach other.

The buffer 226 may be a spring plate disposed on a side that is of eachcarrier 2211 and that faces toward the lens connection portion 211, tosimplify a structure of the buffer 226 and improve installationefficiency of the actuating device 22.

When the carrier 2211 is specifically connected to the lens connectionportion 211, an adhesive may be separately disposed on two sides of thebuffer 226, for example, the spring plate, to bond the carrier 2211 tothe lens connection portion 211. This can implement a stable connectionbetween the carrier 2211 and the lens connection portion 211.

FIG. 10 is a partial schematic diagram of an internal structure in FIG.3 . FIG. 11 is a top view of a power supply apparatus in FIG. 10 . FIG.12 is a main view of a power supply apparatus in FIG. 10 . Refer to FIG.10 to FIG. 12 . During operation of the actuating device 22 in thisembodiment, a coil 2224 of each actuator 222 continuously moves alongthe third magnetic shielding portion 2222 b. To ensure that the powersupply apparatus 2223 stably supplies power to the moving coil 2224, inthis embodiment, one end of the power supply apparatus 2223 is connectedto the motor carrier 221, so that the power supply apparatus 2223 canmove with the motor carrier 221, to form a stable and controllablecurrent in the coil 2224 fastened to the motor carrier 221. Thisproduces a stable driving force for the coil 2224, an implement stabledriving of the motor carrier 221.

It may be understood that the end of the power supply apparatus 2223that is connected to the motor carrier 221 is further electricallyconnected to the coil 2224 on the motor carrier 221, to stably supplypower to the coil 2224.

Refer to FIG. 10 and FIG. 11 . Specifically, the power supply apparatus2223 is a flexible printed circuit board. One end of the flexibleprinted circuit board is electrically connected to the main controlboard 23 of the camera module 20, and the other end of the flexibleprinted circuit board is connected to either of the carriers 2211 of themotor carrier 221, and is electrically connected to the coil 2224connected to the carrier 2211. When driven by the coil 2224 to movealong the first guide rail 225, the carrier 2211 drives one end of theflexible printed circuit board to move synchronously with the carrier2211, so that the main control board 23 provides a stable current to thecoil 2224 by using the flexible printed circuit board.

Still refer to FIG. 11 . The flexible circuit board may include a fixingportion 2223 a and a movable portion 2223 b connected to the fixingportion 2223 a. The fixing portion 2223 a is fastened to the base 223.One end of the movable portion 2223 b is connected to either of thecarriers 2211 of the motor carrier 221, and at least a part of themovable portion 2223 b extends along a moving direction of the carrier2211. In this way, the carrier 2211 of the motor carrier 221 drives themovable portion 2223 b to move stably, to stably supply power to thecoil 2224 on the carrier 2211. In addition, the movable portion 2223 bis connected to the base 223 by using the fixing portion 2223 a, toensure implements stable transmission of a current between the flexibleprinted circuit board and the main control board 23, further ensuring astable current input to the coil 2224.

One end that is of the movable portion 2223 b and that is connected tothe motor carrier 221 may be configured as an arc section 2223 c. Themovable portion 2223 b is connected to the motor carrier 221 by usingthe arc structure, to prevent one end that is of the flexible printedcircuit board and that is connected to the carrier 2211 from beingbroken and ensure the stable current input to the coil 2224.

In some examples, one end of the movable portion 2223 b may be providedwith a reinforcement component 2223 d, so that the end of the movableportion 2223 b is fastened to the carrier 2211 by using thereinforcement component 2223 d. This can improve connection strengthbetween the flexible printed circuit board and the carrier 2211, toimprove reliability for the movable portion 2223 b of the flexibleprinted circuit board to move with the carrier 2211. As shown in FIG. 12, an electrical connection terminal 2223 f is disposed on thereinforcement component 2223 d, and the electrical connection terminal2223 f is electrically connected to the coil 2224 on the carrier 2211,so that the movable portion 2223 b is electrically connected to the coil2224.

When the reinforcement component 2223 d is specifically connected to thecarrier 2211, the reinforcement component 2223 d may be fastened to thecarrier 2211 in a detachable manner, such as by using a screw or afastener.

Still refer to FIG. 11 . The flexible printed circuit board in thisembodiment may further include a transition portion 2223 e, and thefixing portion 2223 a is connected to the movable portion 2223 b byusing the transition portion 2223 e, so that the entire movable portion2223 b can extend in a movement direction of the motor carrier 221. Forexample, the fixing portion 2223 a of the flexible printed circuit boardis fastened to a corresponding sub-base 2231. One end of the transitionportion 2223 e is connected to the fixing portion 2223 a, and the otherend of the transition portion 2223 e extends toward the bottom of thecarrier 2211 corresponding to the motor carrier 221. One end of themovable portion 2223 b is connected to the transition portion 2223 e.The other end of the movable portion 2223 b extends in the movementdirection of the carrier 2211, is connected to the carrier 2211, and iselectrically connected to the coil 2224 on the carrier 2211.

Disposition of the transition portion 2223 e extends a movement strokeof the movable portion 2223 b in a direction parallel to the thirdmagnetic shielding portion 2222 b under driving of the carrier 2211 ofthe motor carrier 221. This can ensure that stability of the fixingportion 2223 a is not affected when the carrier 2211 drives the movableportion 2223 b to move in the movement direction.

Refer to FIG. 9 . To detect a movement position of the motor carrier 221in real time, the actuating device 22 in this embodiment furtherincludes a position detection apparatus 224. Specifically, the positiondetection apparatus 224 includes a Hall element 2241 and a magneticsensing component 2242. The Hall element 2241 is disposed on the motorcarrier 221, and the magnetic sensing component 2242 is disposed on thebase 223. Both the Hall element 2241 and the power supply apparatus 2223are in a signal connection to a processor of the camera module 20. TheHall element 2241 is configured to detect magnetic field strength of themagnetic sensing component 2242, and send a signal to the processor whenthe Hall element 2241 detects that the magnetic field strength of themagnetic sensing component 2242 reaches a preset threshold. Theprocessor controls, based on the signal, the power supply apparatus 2223to stop supplying power to the coil 2224, to stop driving the motorcarrier 221. The magnetic sensing component 2242 may be specifically amagnet.

The position detection apparatus 224 is specifically described below byusing an example in which a movement position of either of the carriers2211 of the motor carrier 221 is detected. The Hall element 2241 isfastened to the carrier 2211, and the magnetic sensing component 2242 isfastened to a sub-base 2231 on which the carrier 2211 is located. In aprocess in which the carrier 2211 moves along the first guide rail 225under driving of the coil 2224, the Hall element 2241 always detects themagnetic field strength generated by the magnetic sensing component2242, and feeds back a value of the magnetic field strength to theprocessor. The processor calculates a distance between the Hall element2241 and the magnetic sensing component 2242, to calculate a specificposition of the carrier 2211. The Hall element 2241 sends a signal tothe processor when the Hall element 2241 detects that the magnetic fieldstrength of the magnetic sensing component 2242 reaches a presetthreshold. The processor controls, based on the signal, the power supplyapparatus 2223 to stop supplying power to the coil 2224, to stop drivingthe carrier 2211.

In this embodiment, the Hall element 2241 and the magnetic sensingcomponent 2242 are disposed, to detect and control a movement positionof the motor carrier 221, so as to implement closed-loop control of themotor carrier 221. In addition, the Hall element 2241 is fastened to thecarrier 2211 of the motor carrier 221, so that the power supplyapparatus 2223 connected to the carrier 2211 stably supplies power tothe Hall element 2241, ensuring normal operation of the Hall element2241. For example, one end of the flexible printed circuit boardconnected to the carrier 2211 may further be directly electricallyconnected to the Hall element 2241, to stably supply power to the Hallelement 2241.

Refer to FIG. 3 and FIG. 9 . To ensure that the Hall element 2241installed on the carrier 2211 can effectively detect the magnetic fieldstrength of the magnetic sensing component 2242, an installation plate2214 is disposed on the holder 2213 of the carrier 2211 in thisembodiment. In addition, an installation base 2234 opposite to theinstallation plate 2214 is disposed on a corresponding sub-base 2231.The Hall element 2241 is fastened to a side surface that is of theinstallation plate 2214 and that faces toward the installation base2234, and the magnetic sensing component 2242 is fastened to a sidesurface that is of the installation base 2234 and that faces toward theinstallation plate 2214. This can prevent a case in which a magneticfield signal between the Hall element 2241 and the magnetic sensingcomponent 2242 is weakened due to being blocked by another component, sothat accuracy of detecting the magnetic field strength of the magneticsensing component 2242 by the Hall element 2241 is further improved.

A receiving groove may be provided on a side that is of the installationplate 2214 and that faces toward the installation base 2234, to receivethe Hall element 2241 in the receiving groove. In this way, stability ofthe Hall element 2241 on the installation plate 2214 is improved, and asize occupied by the Hall element 2241 outside the installation plate2214 is reduced. Similarly, a receiving groove may be provided on a sidethat is of the installation base 2234 and that faces toward theinstallation plate 2214, to receive the magnetic sensing component 2242in the receiving groove. In this way, stability of the magnetic sensingcomponent 2242 on the installation base 2234 is improved, a sizeoccupied by the magnetic sensing component 2242 outside the installationbase 2234 is reduced, and structural compactness of the actuating device22 is further improved.

Refer to FIG. 2 . In an actual application, the camera module 20includes a plurality of coaxial lenses 21 that are sequentially spacedfrom each other, in other words, the plurality of lenses 21 are spacedfrom each other in a direction of axis (the extension direction of thethird magnetic shielding portion 2222 b). To implement long-strokemovement of the plurality of lenses 21, a plurality of motor carriers221 in this embodiment may be sequentially spaced from each other in theextension direction of the third magnetic shielding portion 2222 b. Asshown in FIG. 3 and FIG. 7 , each motor carrier 221 is connected to thecorresponding lens 21, so that the actuating device 22 stably drives theplurality of lenses 21 simultaneously.

To drive the plurality of motor carriers 221, there may be a pluralityof coils 2224 in the actuator 222 in this embodiment of thisapplication, and the plurality of coils 2224 are sleeved on the thirdmagnetic shielding portion 2222 b and spaced from each other. One end ofeach motor carrier 221 is connected to a corresponding coil 2224. Inthis case, any energized coil 2224 can drive, under the action of themagnetic field, a corresponding motor carrier 221 to move.

For example, as shown in FIG. 5 and FIG. 7 , two coils 2224 are sleevedon the third magnetic shielding portion 2222 b of the actuator 222, andthe two coils 2224 are respectively connected to two corresponding motorcarriers 221. When power is supplied to the two coils 2224, an Ampereforce parallel to the extension direction of the third magneticshielding portion 2222 b (as indicated by an x direction in FIG. 7 ) isgenerated in each of the two coils 2224 under the action of the magneticfield. In this case, each coil 2224 moves in the x direction, to drivethe two motor carriers 221 to move in the x direction.

In an actual application, a coil 2224 may be energized based on anactual requirement, to drive a corresponding motor carrier 221 to move,so as to drive a corresponding lens 21.

In embodiments of this application, the plurality of coils 2224 aresleeved on the third magnetic shielding portion 2222 b and spaced fromeach other. A quantity of actuators 222 and a quantity of components andparts of the entire actuating device 22 are reduced while driving of theplurality of motor carriers 221 that are spaced from each other isimplemented. Therefore, the entire structure is simpler and morecompact, and manufacturing and installation efficiency of the actuatingdevice 22 is improved.

For example, the motor carrier 221 includes two opposite carriers 2211.Two opposite carriers 2211 of each motor carrier 221 drive each lens 21,so that the actuating device 22 having the plurality of motor carriers221 stably drives a plurality of lenses 21.

To simplify a structure of the actuating device 22, in some examples,there may be two actuators 222. The two actuators 222 are respectivelydisposed on a side of the two opposite carriers 2211 of the motorcarrier 221.

A magnetic shielding component 2222 of each actuator 222 is connected tothe base 223, and is specifically connected to a sub-base 2231corresponding to the carrier 2211. A plurality of coils 2224 are sleevedon the third magnetic shielding portion 2222 b of each actuator 222 andspaced from each other. In the plurality of motor carriers 221, eachcarrier 2211 on a same side is connected to a corresponding coil 2224,so that each energized coil 2224 drives a corresponding carrier 2211 onthe motor carrier 221, to implement long range zooming of the pluralityof lenses 21.

A quantity of coils 2224 on the third magnetic shielding portion 2222 bmay be equal to a quantity of motor carriers 221, so that the coils aredisposed in correspondence with the carriers 2211 on the same side.Alternatively, a quantity of coils 2224 on the third magnetic shieldingportion 2222 b may be greater than a quantity of motor carriers 221.Redundant coils 2224 are reserved.

For example, the camera module 20 has two coaxial lenses 21. Theactuating device 22 in this embodiment includes two motor carriers 221that are spaced from each other along the axis l of the lenses 21. Oneactuator 222 is disposed on each sub-base 2231. The magnetic shieldingcomponent 2222 of each actuator 222 is connected to the sub-base 2231.Two coils 2224 are sleeved on the third magnetic shielding portion 2222b, and each coil 2224 is respectively connected to the carriers 2211 onthe same side of the two motor carriers 221. During operation, the powersupply apparatus 2223 of each actuator 222 supplies power to the twocoils 2224 on the third magnetic shielding portion 2222 b, and the twoenergized coils 2224 respectively drive the two carriers 2211 on thesame side to move in a corresponding first guide rail 225, to implementlong range zooming of the two lenses 21

It may be understood that, when only one lens 21 needs to be moved,power may be supplied to only two coils 2224 that drive the lens 21 tomove, so that the carriers 2211 connected to two ends of the lens 21move along two first guide rails 225 under driving of correspondingcoils 2224.

Refer to FIG. 10 and FIG. 11 . To enable the power supply apparatus 2223of each actuator 222 to simultaneously supply stable power to two coils2224 on the same side, there may be two movable portions 2223 b in thepower supply apparatus 2223. Ends that are of the two movable portions2223 b and that are away from the transition portion 2223 e respectivelyextend in a movement direction of a corresponding carrier 2211 and arerespectively connected to the corresponding carrier 2211. In this case,when moving, the two carriers 2211 on the same side can drive acorresponding movable portion 2223 b to move, to supply stable power tothe coil 2224 on each carrier 2211.

It should be understood that a quantity of movable portions 2223 b ofeach power supply apparatus 2223 corresponds to a quantity of motorcarriers 221, so that the movable portions 2223 b of each power supplyapparatus 2223 can be correspondingly connected to carriers 2211 on thesame side.

In this embodiment, the plurality of coils 2224 are sleeved on the thirdmagnetic shielding portion 2222 b of the actuator 222, to simultaneouslydrive a plurality of carriers 2211 on the same side. A quantity ofactuators 222 and a quantity of components and parts of the entireactuating device 22 are reduced while driving of the plurality of motorcarriers 221 that are spaced from each other is implemented. Therefore,the entire structure is simpler and more compact, and manufacturing andinstallation efficiency of the actuating device 22 is improved.

Embodiment 2

FIG. 13 is a schematic diagram of a second structure of an actuatingdevice in FIG. 2 . FIG. 14 is a schematic diagram of a partial splitstructure of an actuating device in FIG. 13 . Refer to FIG. 13 and FIG.14 . Different from Embodiment 1, in the actuator 222 in this embodimentof this application, the magnetic shielding component 2222 and the atleast one actuating magnetic component 2221 are fixedly connected to thebase 223.

The base 223 includes at least one side wall, and the magnetic shieldingcomponent 2222 is at least partially fastened to the side wall of thebase 223. For example, as shown in FIG. 14 , the base 223 includes twoopposite side walls. The first magnetic shielding portion 2222 a in themagnetic shielding component 2222 may be located on one side of an innersurface of a side wall of the base 223, and the first magnetic shieldingportion 2222 a may be fastened to the inner surface of the side wall ofthe base 223. The at least one actuating magnetic component 2221 may befastened to the first magnetic shielding portion 2222 a.

Both the actuating magnetic component 2221 and the coil 2224 are locatedin the installation space enclosed by the first magnetic shieldingportion 2222 a and the two second magnetic shielding portions 2222 c.The actuating magnetic component 2221 is fastened to the first magneticshielding portion 2222 a. There may be plurality of actuating magneticcomponent 2221. In FIG. 13 , there are two actuating magnetic components2221 in each actuator 222, one coil 2224 is disposed on one side of eachactuating magnetic component 2221, and one end of each motor carrier 221is connected to one coil 2224.

As shown in FIG. 14 , the actuating magnetic component 2221 includes afirst part 2221 a and a second part 2221 b that are disposed in anextension direction. The first part 2221 a and the second part 2221 bhave opposite magnetism. The coil 2224 is located on a side that is ofthe actuating magnetic component 2221 and that is away from the firstmagnetic shielding portion 2222 a. An axis direction of the coil 2224 isperpendicular to an extension direction of the actuating magneticcomponent 2221, a part of the coil 2224 is located on a side of thefirst part 2221 a, and the other part of the coil 2224 is located on aside of the second part 2221 b.

As shown in FIG. 14 , the fixing portion 2223 a in the power supplyapparatus 2223 is fastened to the base 223. A difference between thepower supply apparatus 2223 and the foregoing embodiment is as follows:In this embodiment of this application, the movable portion 2223 b ofthe power supply apparatus 2223 may be an elastomer, one end of themovable portion 2223 b is electrically connected to the carrier 2211 ofthe motor carrier 221 or the coil 2224, and the other end of the movableportion 2223 b bypasses the actuating magnetic component 2221 and iselectrically connected to the fixing portion 2223 a. In this case, whenthe carrier 2211 of the motor carrier 221 moves, because the movableportion 2223 b is elastic, the carrier 2211 drives one end of themovable portion 2223 b to move stably, and the other end of the movableportion 2223 b is fixed. This can supply mobile power to the carrier2211.

FIG. 15 is a main view of FIG. 14 . Refer to FIG. 15 . Under the actionof the magnetic field, the energized coil 2224 moves in the extensiondirection (a direction indicated by an arrow e in FIG. 15 ) of theactuating magnetic component 2221 relative to the first magneticshielding portion 2222 a. The extension direction of the actuatingmagnetic component 2221 is consistent with the specified direction. Inthis case, in a moving process, the coil 2224 drives the motor carrier221 to move on the path parallel to the specified direction. This canimplement stable movement of the lens 21 connected to the motor carrier221 and a long range zooming function.

It should be noted that the axis direction of the coil 2224 is adirection indicated by a principal axis of annular space formed by thecoil 2224.

Refer to FIG. 15 . For ease of description, the coil 2224 in thisembodiment of this application may include a left half part 2224 a and aright half part 2224 b that are successively disposed in the extensiondirection of the actuating magnetic component 2221. The left half part2224 a and the right half part 2224 b are respectively located on a sideof the first part 2221 a and the second part 2221 b of the actuatingmagnetic component 2221.

The first part 2221 a and the second part 2221 b have oppositemagnetism, currents of the left half part 2224 a and the right half part2224 b of the energized coil 2224 are in opposite directions, andcurrent directions are perpendicular to the magnetic induction lineacting on the coil 2224 by the actuating magnetic component 2221.Therefore, after the coil 2224 is energized, an ampere forces acting onthe left half part 2224 a and the right half part 2224 b of the coil2224 have components in a same direction in the extension direction ofthe actuating magnetic component 2221, so that the coil 2224 can move inthe extension direction of the actuating magnetic component 2221.

For example, the coil 2224 is a rectangular annular coil, the first part2221 a of the actuating magnetic component 2221 is an N pole, and thesecond part 2221 b is an S pole. The left half part 2224 a of the coil2224 is located on a side of the first part 2221 a, the right half part2224 b of the coil 2224 is located on a side of the second part 2221 b.Both the left half part 2224 a and the right half part 2224 b of thecoil 2224 include a vertical part and a horizontal part. The verticalpart is perpendicular to the extension direction of the actuatingmagnetic component 2221, and the horizontal part is parallel to theextension direction of the actuating magnetic component 2221.

The magnetic induction line generated by the actuating magneticcomponent 2221 passes from the first part 2221 a through the coil 2224to the second part 2221 b. In this case, a magnetic induction line towhich the left half part 2224 a of the coil 2224 is exposed isperpendicular to the left half part 2224 a of the coil 2224, and pointsfrom a side facing toward the actuating magnetic component 2221 to aside away from the actuating magnetic component 2221 (in other words,from inward to paper to outward). A magnetic induction line to which theright half part 2224 b of the coil 2224 is exposed is perpendicular tothe right part of the coil 2224, and points from the side away from theactuating magnetic component 2221 to the side facing toward theactuating magnetic component 2221 (in other words, from outward toinward to paper).

When the power supply apparatus 2223 provides a current in a clockwisedirection, in other words, a direction indicated by an arrow d, to thecoil 2224, a current on the vertical part of the left half part 2224 aof the coil 2224 points upward. According to the left-hand rule, it canbe learned that: An Ampere force acting on the vertical part of the lefthalf part 2224 a is parallel to the extension direction of the actuatingmagnetic component 2221, and points to the right, in other words, adirection indicated by an arrow e. An upper horizontal part and a lowerhorizontal part of the left half part 2224 a carry currents in oppositedirections and are subject to magnetic fields in a same direction, andthen ampere forces on the upper and lower parts counteract each other.

A current on the vertical part of the right half part 2224 b of the coil2224 points downward. According to the left-hand rule, it can be learnedthat: An Ampere force acting on the vertical part of the right half part2224 b is parallel to the extension direction of the actuating magneticcomponent 2221, and points to the right, in other words, a directionindicated by an arrow e. An upper horizontal part and a lower horizontalpart of the right half part 2224 b carry currents in opposite directionsand are subject to magnetic fields in a same direction, and then ampereforces on the upper and lower parts counteract each other.

Based on the foregoing analysis, it can be learned that the entire coil2224 is subject to the Ampere force parallel to the extension directionof the actuating magnetic component 2221, and the Ampere force points tothe right, in other words, the direction indicated by the arrow e. Itmay be understood that, when the power supply apparatus 2223 provides acurrent in a counterclockwise direction to the coil 2224, the entirecoil 2224 is subject to the Ampere force parallel to the extensiondirection of the actuating magnetic component 2221, and the Ampere forcepoints to the left, in other words, an opposite direction of thedirection indicated by the arrow e.

As shown in FIG. 13 , the magnetic shielding component 2222 is connectedto the camera module 20 or a stationary component, such as the base 223,in the mobile phone. For example, the first magnetic shielding portion2222 a of the magnetic shielding component 2222 is fastened to the base223, to ensure that the magnetic shielding component 2222 is fixed andthe coil 2224 is connected to the motor carrier 221. In this case, theenergized coil 2224 moves in the extension direction (a directionindicated by the arrow x in FIG. 13 ) of the actuating magneticcomponent 2221 under the action of the magnetic field of the actuatingmagnetic component 2221, to drive the motor carrier 221 to move in the xdirection. This can implement stable movement of the lens 21 connectedto the motor carrier 221 and a long range zooming function.

In embodiments of this application, the two parts of the actuatingmagnetic component 2221 that are disposed in the extension directionhave opposite magnetism. Two parts of the coil 2224 that are disposed inthe extension direction of the actuating magnetic component 2221 arerespectively disposed on a side of the first part 2221 a and the secondpart 2221 b. In this case, when power is supplied to the coil 2224, thecoil 2224 moves in the extension direction of the actuating magneticcomponent 2221 under the action of the magnetic field. This can ensurethat the motor carrier 221 connected to the coil 2224 to move in aspecified direction, to drive the lens 21.

In embodiments of this application, the motor carrier can change themovement stroke of the motor carrier 221 by adjusting extended lengthsof the first part 2221 a and the second part 2221 b of the actuatingmagnetic component 2221. This ensures a simple structure and convenientinstallation and operation.

Refer to FIG. 14 . In some examples, the magnetic shielding component2222 may further include a fourth magnetic shielding portion 2222 d. Twoends of the fourth magnetic shielding portion 2222 d in an extensiondirection are respectively connected to the two second magneticshielding portion 2222 c. The first magnetic shielding portion 2222 a isconnected to a side of the fourth magnetic shielding portion 2222 d. Forexample, the fourth magnetic shielding portion 2222 d includes two sideedges disposed opposite to each other in a width direction, and thefirst magnetic shielding portion 2222 a is connected to either of theside edges. The first magnetic shielding portion 2222 a, the two secondmagnetic shielding portions 2222 c, and the fourth magnetic shieldingportion 2222 d jointly enclose the installation space of the magneticshielding component 2222. Both the coil 2224 and the actuating magneticcomponent 2221 are disposed on the fourth magnetic shielding portion2222 d.

In this embodiment of this application, disposition of the fourthmagnetic shielding portion 2222 d further isolates the magnetic field,and improves structural stability of the actuating magnetic component2221 and the coil 2224 in the actuating device 22.

Refer to FIG. 13 . Different from Embodiment 1, when the actuatingdevice 22 includes a plurality of motor carriers 221 that are spacedfrom each other in the extension direction (for example, a directionindicated by x) of the actuating magnetic component 2221, to drive theplurality of motor carriers 221, the actuator 222 in this embodiment ofthis application includes a plurality of actuating magnetic components2221. The plurality of actuating magnetic components 2221 aresuccessively disposed in the extension direction of the first magneticshielding portion 2222 a, one coil 2224 is disposed on one side of eachactuating magnetic component 2221, and one end of each motor carrier 221is connected to a corresponding coil 2224. In this case, any energizedcoil 2224 can drive, under the action of the magnetic field, acorresponding motor carrier 221 to move.

Refer to FIG. 13 . Two motor carriers 221 are used as an example. Todrive a plurality of motor carriers 221, the actuator 222 in thisembodiment of this application includes two actuating magneticcomponents 2221. The two actuating magnetic components 2221 aresuccessively disposed in the extension direction (for example, thedirection indicated by x) of the first magnetic shielding portion 2222a, one coil 2224 is disposed on one side of each actuating magneticcomponent 2221, and one end of each motor carrier 221 is connected to acorresponding coil 2224. In this case, any energized coil 2224 candrive, under the action of a magnetic field, a corresponding motorcarrier 221 to move, so that the lens 21 connected to the motor carrier221 moves.

Two adjacent actuating magnetic components 2221 may be in contact witheach other, to reduce a size occupied by the actuator 222 in theactuating device 22.

Embodiment 3

FIG. 16 is a schematic diagram of a third structure of an actuatingdevice in FIG. 2 . FIG. 17 is a sectional view of a part along a lineD-D in FIG. 16 . Refer to FIG. 16 and FIG. 17 . Different from theactuating device 22 of the first and second structures, in the actuatingdevice 22 of the third structure provided in this embodiment, the coil2224 of the actuator 222 is connected to the camera module 20 or astationary component in the electronic device. For example, the coil2224 of the actuator 222 is connected to the base 223, one end of thethird magnetic shielding portion 2222 b penetrates the coil 2224, andthe third actuating magnetic component 2221 is disposed on the firstmagnetic shielding portion 2222 a. As shown in FIG. 16 , the actuatingmagnetic component 2221 and the motor carrier 221 are respectivelylocated on two sides of the first magnetic shielding portion 2222 a. Theactuating magnetic component 2221 is disposed, for example, on a sidewall facing outward of the first magnetic shielding portion 2222 a. Theactuating magnetic component 2221 is opposite to the third magneticshielding portion 2222 b. The first magnetic shielding portion 2222 a isconnected to the motor carrier 221. In this embodiment of thisapplication, the motor carrier 221 is connected to the actuatingmagnetic component 2221 by using the first magnetic shielding portion2222 a.

In this embodiment of this application, the coil 2224 is fixed. Afterthe coil 2224 is energized, the actuating magnetic component 2221, thefirst magnetic shielding portion 2222 a, and the third magneticshielding portion 2222 b move together, and drive the motor carrier 221to move. Therefore, the base 223 is provided with an avoidance passage2231 a for the magnetic shielding component 2222 to move.

Consistent with the actuator 222 in Embodiment 1 or Embodiment 2, theAmpere force parallel to the first magnetic shielding portion 2222 a isgenerated after an end that is of the energized coil 2224 and that isclose to the actuating magnetic component 2221 is exposed to aperpendicular magnetic field. Because the coil 2224 is fastened to thebase 223, according to the principle of action and reaction forces, themagnetic shielding component 2222 passes through the coil 2224 toreciprocate, to drive the motor carrier 221 connected to the firstmagnetic shielding portion 2222 a to move along a path parallel to theextension direction of the first magnetic shielding portion 2222 a. Inthis case, long range zooming of the lens 21 fastened to the motorcarrier 221 is further implemented.

Refer to FIG. 16 . When the motor carrier 221 includes the two oppositecarriers 2211, the coil 2224 configured to drive an actuator 222 of eachcarrier 2211 is connected to a corresponding sub-base 2231. For example,one end that is of the coil 2224 and that is away from the actuatingmagnetic component 2221 may be connected to the sub-base 2231, so thatthe coil 2224 is fixed. In addition, the avoidance passage 2231 a isprovided on the sub-base 2231. The avoidance passage 2231 a extends inthe direction of the first magnetic shielding portion 2222 a, so thatthe magnetic shielding component 2222 passes through the coil 2224 andmoves in the avoidance passage 2231 a under the action of the ampereforce, to drive each carrier 2211.

Because the coil 2224 is fastened to the sub-base 2231 and does not movewith the motor carrier 221, the power supply apparatus 2223 thatsupplies power to the coil 2224 is connected to the sub-base 2231, toprovide a stable current to the coil 2224 on the sub-base 2231.

In addition, the power supply apparatus 2223 is connected to thesub-base 2231 of the base 223, to simplify a structure of each carrier2211. This improves installation efficiency of the actuating device 22,and reduces a load of the motor carrier 221, so that the magneticshielding component 2222 can effectively drive the motor carrier 221 tomove.

As shown in FIG. 17 , the Hall element 2241 of the position detectionapparatus 224 in this example is installed on the base 223, and themagnetic sensing component 2242 is installed on the motor carrier 221.Specifically, to detect a movement position of each carrier 2211 on themotor carrier 221, a magnetic sensing component 2242 may be installed oneach carrier 2211. For example, an inwardly directed installation slotmay be provided at a bottom of the carrier 2211. The magnetic sensingcomponent 2242 is received in the installation slot. This improvesstability of the magnetic sensing component 2242 on the carrier 2211,and reduces space in a vertical direction occupied by the magneticsensing component 2242 in the actuating device 22, ensuring a morecompact structure of the actuating device 22.

In addition, a Hall element 2241 corresponding to the magnetic sensingcomponent 2242 is installed on the sub-base 2231. In a process in whichthe carrier 2211 moves along the first guide rail 225 under driving ofthe magnetic shielding component 2222, the Hall element 2241 alwaysdetects the magnetic field strength generated by the magnetic sensingcomponent 2242, and feeds back a value of the magnetic field strength tothe processor. The processor calculates a distance between the Hallelement 2241 and the magnetic sensing component 2242, to calculate aspecific position of the carrier 2211. The Hall element 2241 sends asignal to the processor when the Hall element 2241 detects that themagnetic field strength of the magnetic sensing component 2242 reaches apreset threshold. The processor controls, based on the signal, the powersupply apparatus 2223 to stop supplying power to the coil 2224, to stopdriving the carrier 2211, so as to implement closed-loop control of themotor carrier 221.

In addition, the Hall element 2241 is installed on the sub-base 2231 onthe base 223, so that the power supply apparatus 2223 fastened to thesub-base 2231 stably supplies power to the Hall element 2241. Inaddition, both the Hall element 2241 and the power supply apparatus 2223are disposed on the base 223, so that an installation structure of themotor carrier 221 is further simplified, and a structure of the entireactuating device 22 is more reasonable and compact.

Refer to FIG. 16 . When there are a plurality of motor carriers 221 inthe actuating device 22 in this embodiment, a plurality of carriers 2211on a same side are all driven by one actuator 222. For example, theplurality of carriers on the same side are all connected to the firstmagnetic shielding portion 2222 a of the magnetic shielding component2222 located on this side. In this case, when the magnetic shieldingcomponent 2222 of the actuator 222 passes through the coil 2224 andmoves in the avoidance passage 2231 a, the magnetic shielding component2222 of the actuator 222 can simultaneously drive the plurality ofcarriers 2211 on the same side, to implement synchronous drive of thelenses 21 on the plurality of motor carriers 221.

Each carrier 2211 and the first magnetic shielding portion 2222 a can beconnected in a plurality of manners. For example, a fastener may bedisposed at one end that is of the carrier 2211 and that is close to thefirst magnetic shielding portion 2222 a, to implement a stableconnection between the first magnetic shielding portion 2222 a and thecarrier 2211. For another example, each carrier 2211 may be connected tothe first magnetic shielding portion 2222 a by using a screw. This canensure connection strength between the carrier 2211 and the firstmagnetic shielding portion 2222 a, and help replace the motor carrier221 and the actuator 222 separately.

A connection manner between the carrier 2211 and the first magneticshielding portion 2222 a is not specifically limited in this example,provided that the first magnetic shielding portion 2222 a can drive thecarrier 2211 to move synchronously when moving.

An embodiment of this application further provides a camera module 20,including at least one lens 21 and the actuating device 22 of any one ofthe foregoing structures. An actuator 222 of the actuating device 22 isconnected to the lens 21 by using a motor carrier 221, to drive the lens21 to move in a specified direction (for example, parallel to anextension direction of a first magnetic shielding portion 2222 a of theactuator 222).

In this embodiment of this application, the actuating device 22 isdisposed in the camera module 20 to drive the lens 21 to move on a pathparallel to a specified direction, to implement a long range zoomingprocess of the lens 21. With a simple structure, the actuating device 22effectively reduces manufacturing and installation difficulties of theentire camera module 20. In addition, each component is at lower coststhan a stepper motor, reducing manufacturing costs of the entire cameramodule 20.

It should be noted that the actuator 222 in the actuating device 22shown in FIG. 16 and FIG. 17 is the structure in Embodiment 1. However,in this embodiment, the actuator 222 of the actuating device 22 is thestructure described in Embodiment 2 and Embodiment 1 and an installationmanner between the actuator 222, the motor carrier 221, and the base 223is consistent with that described in Embodiment 2 and Embodiment 1.Therefore, when the actuator 222 of the actuating device 22 is thestructure described in Embodiment 2, for the installation manner betweenthe actuator 222, the motor carrier 221, and the base 223, directlyrefer to the foregoing content.

An embodiment of this application provides an electronic device,including a housing 10 and the camera module 20, where the camera module20 is disposed on the housing 10. The housing 10 may be a rear cover ofthe electronic device. When the electronic device is an intelligentterminal such as a mobile phone, the camera module 20 may be a rearfacing camera module, or the camera module 20 may be a front facingcamera module.

The camera module 20 is disposed in the electronic device, to implementlong range zooming of the camera module 20 of the electronic device, andensure functions of long range shooting with a long focal length andwide-angle shooting with a short focal length of the electronic device.This simplifies a structure of the electronic device, and reducesmanufacturing and installation difficulties. In addition, each componentis at lower costs than a stepper motor, reducing manufacturing costs ofthe entire electronic device.

It should be noted that the electronic device includes but is notlimited to an electronic device having a camera module, such as a mobilephone, a tablet, a notebook computer, a handheld computer, a personaldigital assistant (PDA), a wearable device, or a virtual reality device.

In descriptions of embodiments of this application, it should be notedthat, unless otherwise clearly specified and limited, the terms“installation”, “connection to”, and “connection” should be understoodin a broad sense. For example, the connection may be a fixed connection,may be an indirect connection by using an intermediate medium, or may bean internal connection between two elements or an interactionrelationship between two elements. For a person of ordinary skill in theart, specific meanings of the foregoing terms in embodiments of thisapplication may be understood according to a specific situation.

In the specification, claims, and accompanying drawings of embodimentsof this application, the terms “first”, “second”, “third”, “fourth”, andso on (if existent) are intended to distinguish between similar objectsbut do not necessarily indicate a specific order or sequence.

1. An actuating device comprising: a motor carrier; and at least oneactuator, wherein the motor carrier is configured to carry one lens, andthe motor carrier is driven by one or more corresponding actuators ofthe at least one actuator, and each actuator comprises: at least oneactuating magnetic component; a power supply apparatus; and at least onecoil, wherein the power supply apparatus is electrically connected toeach coil, the motor carrier is connected to the at least one coil orthe at least one actuating magnetic component, and the at least one coiland the at least one actuating magnetic component are configured tojointly drive the motor carrier to move when the at least one coil isenergized.
 2. The actuating device according to claim 1, wherein eachactuator further comprises a magnetic shielding component, and themagnetic shielding component comprises a first magnetic shieldingportion and two second magnetic shielding portions, wherein the twosecond magnetic shielding portions are oppositely disposed at first andsecond ends of the first magnetic shielding portion, the first magneticshielding portion and the two second magnetic shielding portion enclosean installation space, the at least one actuating magnetic component islocated in the installation space, the at least one actuating magneticcomponent is fastened to the first magnetic shielding portion, and themotor carrier is connected to the at least one coil or the firstmagnetic shielding portion.
 3. The actuating device according to claim2, wherein the magnetic shielding component further comprises a thirdmagnetic shielding portion, the third magnetic shielding portion and thefirst magnetic shielding portion are spaced from each other and disposedin parallel, and first and second ends of the third magnetic shieldingportion are connected to the two second magnetic shielding portions,first and second ends of the actuating magnetic component separatelyextend to the two second magnetic shielding portions, the at least onecoil is movably sleeved on the third magnetic shielding portion, and theenergized at least one coil moves, under an action of a magnetic field,relative to the first magnetic shielding portion in an extensiondirection of the third magnetic shielding portion.
 4. The actuatingdevice according to claim 2, further comprising: a base, wherein themotor carrier, the at least one actuator, and the at least one lens areall disposed on the base.
 5. The actuating device according to claim 4,wherein when the motor carrier is connected to the at least one coil ofthe one or more corresponding actuators, the at least one actuatingmagnetic component is fixed to the base.
 6. The actuating deviceaccording to claim 4, wherein when the motor carrier is connected to theat least one coil of the one or more corresponding actuators, themagnetic shielding component and the at least one actuating magneticcomponent are fixed to the base.
 7. The actuating device according toclaim 5, wherein the base comprises at least one side wall, and themagnetic shielding component is at least partially fastened to the atleast one side wall of the base.
 8. The actuating device according toclaim 3, further comprising: a plurality of motor carriers, wherein theplurality of motor carriers and the motor carrier are spaced from eachother in an extension direction of the third magnetic shielding portion,and a plurality of lenses are spaced from each other in an axisdirection of the plurality of lenses.
 9. A camera module, comprising: atleast one lens, and an actuating device, wherein the actuating device isconfigured to drive a lens of the camera module to move, and theactuating device comprises: a motor carrier; and at least one actuator,wherein the motor carrier is configured to carry one lens, and the motorcarrier is driven by one or more corresponding actuators of the at leastone actuator, each actuator comprises;  at least one actuating magneticcomponent;  a power supply apparatus; and  at least one coil, wherein the power supply apparatus is electrically connected to each coil,  themotor carrier is connected to the at least one coil or the at least oneactuating magnetic component, and  the at least one coil and the atleast one actuating magnetic component are configured to jointly drivethe one motor carrier to move when the at least one coil is energized,and an actuator of the actuating device is connected to the lens, viathe motor carrier, to drive the lens to move in a specified direction.10. The camera module according to claim 9, wherein each actuatorfurther comprises a magnetic shielding component, and the magneticshielding component comprises a first magnetic shielding portion and twosecond magnetic shielding portions, wherein the two second magneticshielding portions are oppositely disposed at first and second ends ofthe first magnetic shielding portion, the first magnetic shieldingportion and the two second magnetic shielding portion enclose aninstallation space, the at least one actuating magnetic component islocated in the installation space, the at least one actuating magneticcomponent is fastened to the first magnetic shielding portion, and themotor carrier is connected to the at least one coil or the firstmagnetic shielding portion.
 11. The camera module according to claim 10,wherein the magnetic shielding component further comprises a thirdmagnetic shielding portion, the third magnetic shielding portion and thefirst magnetic shielding portion are spaced from each other and disposedin parallel, and first and second ends of the third magnetic shieldingportion are connected to the two second magnetic shielding portions,first and second ends of the actuating magnetic component separatelyextend to the two second magnetic shielding portions, the at least onecoil is movably sleeved on the third magnetic shielding portion, and theenergized at least one coil moves, under an action of a magnetic field,relative to the first magnetic shielding portion in an extensiondirection of the third magnetic shielding portion.
 12. The camera moduleaccording to claim 10, wherein the actuating device further comprises: abase, wherein the motor carrier, the at least one actuator, and the atleast one lens are all disposed on the base.
 13. The camera moduleaccording to claim 12, further comprising: a plurality of actuatingmagnetic components, wherein the plurality of actuating magneticcomponents are successively disposed in an extension direction of thefirst magnetic shielding portion, at least one coil is disposed on aside of each actuating magnetic component, and the motor carrier isconnected to the at least one coil, wherein the at least one coil drivesthe motor carrier to move after the at least one coil is energized. 14.The camera module according to claim 12, wherein the at least one coilis fastened to the base, the at least one actuating magnetic componentis disposed on the first magnetic shielding portion, the at least oneactuating magnetic component and the motor carrier are respectivelylocated on first and second sides of the first magnetic shieldingportion, the motor carrier is connected to the first magnetic shieldingportion, and the at least one actuating magnetic component is configuredto move after the at least one coil is energized, to drive the firstmagnetic shielding portion and the motor carrier to move.
 15. The cameramodule according to claim 12, wherein the power supply apparatus isdisposed on the motor carrier.
 16. The camera module according to claim12, wherein the actuating device further comprises: a position detectionapparatus, wherein the position detection apparatus comprises a Hallelement and a magnetic sensing component, the Hall element is disposedon the motor carrier, the magnetic sensing component is disposed on thebase, both the Hall element and the power supply apparatus are in asignal connection to a processor of the camera module, the Hall elementis configured to detect magnetic field strength of the magnetic sensingcomponent, and send a signal to the processor when the Hall elementdetects that the magnetic field strength of the magnetic sensingcomponent reaches a threshold, and the processor controls, based on thesignal, the power supply apparatus to stop supplying power to the atleast one coil.
 17. The camera module according to claim 12, wherein themotor carrier is connected to the first magnetic shielding portion, theat least one coil is connected to the base, and the base is providedwith an avoidance passage for the magnetic shielding component to move.18. An electronic device, comprising: a housing; and a camera module,wherein the camera module comprises at least one lens and an actuatingdevice, and the actuating device comprises: a motor carrier; and atleast one actuator, wherein the motor carrier is configured to carry onelens, and the motor carrier is driven by one or more correspondingactuators of the at least one actuator, and each actuator comprises;  atleast one actuating magnetic component;  a power supply apparatus; and at least one coil, wherein  the power supply apparatus is electricallyconnected to each coil,  the motor carrier is connected to the at leastone coil or the at least one actuating magnetic component, and  the atleast one coil and the at least one actuating magnetic component areconfigured to jointly drive the motor carrier to move when the at leastone coil is energized, an actuator of the actuating device is connectedto the lens, via the motor carrier, to drive the lens to move in aspecified direction, and the camera module is disposed on the housing.19. The electronic device according to claim 18, wherein each actuatorfurther comprises a magnetic shielding component, the magnetic shieldingcomponent comprises a first magnetic shielding portion and two secondmagnetic shielding portions, the two second magnetic shielding portionsare oppositely disposed at first and second ends of the first magneticshielding portion, the first magnetic shielding portion and the twosecond magnetic shielding portion enclose an installation space, the atleast one actuating magnetic component is located in the installationspace, the at least one actuating magnetic component is fastened to thefirst magnetic shielding portion, and the motor carrier is connected tothe at least one coil or the first magnetic shielding portion.
 20. Theelectronic device according to claim 19, wherein the at least oneactuating magnetic component comprises a first part and a second part,the first part and the second part are disposed in an extensiondirection of the at least one actuating magnetic component, the firstpart and the second part have opposite magnetism, the at least on coilis located on a side of the at least one actuating magnetic componentand away from the first magnetic shielding portion, an axis direction ofthe at least one coil is perpendicular to the extension direction of theat least one actuating magnetic component, a first part of the at leastone coil is located on a side of the first part of the at least oneactuating magnetic component, and a second part of the at least one coilis located on a side of the second part of the at least one actuatingmagnetic component.